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Finding the Fourth Proportional to 150,666.13, 207,904.11 and 90,235.22

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Solution

The fourth proportional to 150,666.13, 207,904.11 and 90,235.22 is: 124,515.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,666.13 : 207,904.11 = 90,235.22 : x
  2. Step 2: Convert to fraction form
    150,666.13/207,904.11 = 90,235.22/x
  3. Step 3: Cross multiply
    150,666.13x = 207,904.11 × 90,235.22
  4. Step 4: Simplify right side
    150,666.13x = 18,760,273,104.75
  5. Step 5: Solve for x
    x = 18,760,273,104.75/150,666.13
  6. Step 6: Final answer
    x = 124,515.53

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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.