Home / 138,105,612,305.89-190,583,716,700.09-77,138,869,248.93

Finding the Fourth Proportional to 138,105,612,305.89, 190,583,716,700.09 and 77,138,869,248.93

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Solution

The fourth proportional to 138,105,612,305.89, 190,583,716,700.09 and 77,138,869,248.93 is: 106,450,506,666.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,105,612,305.89 : 190,583,716,700.09 = 77,138,869,248.93 : x
  2. Step 2: Convert to fraction form
    138,105,612,305.89/190,583,716,700.09 = 77,138,869,248.93/x
  3. Step 3: Cross multiply
    138,105,612,305.89x = 190,583,716,700.09 × 77,138,869,248.93
  4. Step 4: Simplify right side
    138,105,612,305.89x = 14,701,412,403,502,406,172,672
  5. Step 5: Solve for x
    x = 14,701,412,403,502,406,172,672/138,105,612,305.89
  6. Step 6: Final answer
    x = 106,450,506,666.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.