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Finding the Fourth Proportional to 150,646.28, 207,898.42 and 90,226.76

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Solution

The fourth proportional to 150,646.28, 207,898.42 and 90,226.76 is: 124,516.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,646.28 : 207,898.42 = 90,226.76 : x
  2. Step 2: Convert to fraction form
    150,646.28/207,898.42 = 90,226.76/x
  3. Step 3: Cross multiply
    150,646.28x = 207,898.42 × 90,226.76
  4. Step 4: Simplify right side
    150,646.28x = 18,758,000,845.72
  5. Step 5: Solve for x
    x = 18,758,000,845.72/150,646.28
  6. Step 6: Final answer
    x = 124,516.85

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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.