Home / 123,650.17-185,186.79-90,287.47

Finding the Fourth Proportional to 123,650.17, 185,186.79 and 90,287.47

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Solution

The fourth proportional to 123,650.17, 185,186.79 and 90,287.47 is: 135,220.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,650.17 : 185,186.79 = 90,287.47 : x
  2. Step 2: Convert to fraction form
    123,650.17/185,186.79 = 90,287.47/x
  3. Step 3: Cross multiply
    123,650.17x = 185,186.79 × 90,287.47
  4. Step 4: Simplify right side
    123,650.17x = 16,720,046,746.52
  5. Step 5: Solve for x
    x = 16,720,046,746.52/123,650.17
  6. Step 6: Final answer
    x = 135,220.57

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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.