Home / 138,105,612,305.90-190,583,716,700.08-77,138,869,248.92

Finding the Fourth Proportional to 138,105,612,305.90, 190,583,716,700.08 and 77,138,869,248.92

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Solution

The fourth proportional to 138,105,612,305.90, 190,583,716,700.08 and 77,138,869,248.92 is: 106,450,506,666.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,105,612,305.90 : 190,583,716,700.08 = 77,138,869,248.92 : x
  2. Step 2: Convert to fraction form
    138,105,612,305.90/190,583,716,700.08 = 77,138,869,248.92/x
  3. Step 3: Cross multiply
    138,105,612,305.90x = 190,583,716,700.08 × 77,138,869,248.92
  4. Step 4: Simplify right side
    138,105,612,305.90x = 14,701,412,403,501,252,739,072
  5. Step 5: Solve for x
    x = 14,701,412,403,501,252,739,072/138,105,612,305.90
  6. Step 6: Final answer
    x = 106,450,506,666.87

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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.