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Finding the Fourth Proportional to 150,565.69, 207,798.01 and 90,136.32

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Solution

The fourth proportional to 150,565.69, 207,798.01 and 90,136.32 is: 124,398.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,565.69 : 207,798.01 = 90,136.32 : x
  2. Step 2: Convert to fraction form
    150,565.69/207,798.01 = 90,136.32/x
  3. Step 3: Cross multiply
    150,565.69x = 207,798.01 × 90,136.32
  4. Step 4: Simplify right side
    150,565.69x = 18,730,146,920.14
  5. Step 5: Solve for x
    x = 18,730,146,920.14/150,565.69
  6. Step 6: Final answer
    x = 124,398.51

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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.