Home / 138,105,612,306.90-190,583,716,701.46-77,138,869,249.92

Finding the Fourth Proportional to 138,105,612,306.90, 190,583,716,701.46 and 77,138,869,249.92

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Solution

The fourth proportional to 138,105,612,306.90, 190,583,716,701.46 and 77,138,869,249.92 is: 106,450,506,668.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,105,612,306.90 : 190,583,716,701.46 = 77,138,869,249.92 : x
  2. Step 2: Convert to fraction form
    138,105,612,306.90/190,583,716,701.46 = 77,138,869,249.92/x
  3. Step 3: Cross multiply
    138,105,612,306.90x = 190,583,716,701.46 × 77,138,869,249.92
  4. Step 4: Simplify right side
    138,105,612,306.90x = 14,701,412,403,797,716,631,552
  5. Step 5: Solve for x
    x = 14,701,412,403,797,716,631,552/138,105,612,306.90
  6. Step 6: Final answer
    x = 106,450,506,668.25

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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.