Home / 123,785,998.20-185,678,997.30-66,390,370.20

Finding the Fourth Proportional to 123,785,998.20, 185,678,997.30 and 66,390,370.20

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Solution

The fourth proportional to 123,785,998.20, 185,678,997.30 and 66,390,370.20 is: 99,585,555.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,785,998.20 : 185,678,997.30 = 66,390,370.20 : x
  2. Step 2: Convert to fraction form
    123,785,998.20/185,678,997.30 = 66,390,370.20/x
  3. Step 3: Cross multiply
    123,785,998.20x = 185,678,997.30 × 66,390,370.20
  4. Step 4: Simplify right side
    123,785,998.20x = 12,327,297,369,111,802
  5. Step 5: Solve for x
    x = 12,327,297,369,111,802/123,785,998.20
  6. Step 6: Final answer
    x = 99,585,555.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.