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Finding the Fourth Proportional to 151,008.71, 208,402.88 and 90,581.90

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Solution

The fourth proportional to 151,008.71, 208,402.88 and 90,581.90 is: 125,009.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,008.71 : 208,402.88 = 90,581.90 : x
  2. Step 2: Convert to fraction form
    151,008.71/208,402.88 = 90,581.90/x
  3. Step 3: Cross multiply
    151,008.71x = 208,402.88 × 90,581.90
  4. Step 4: Simplify right side
    151,008.71x = 18,877,527,340.95
  5. Step 5: Solve for x
    x = 18,877,527,340.95/151,008.71
  6. Step 6: Final answer
    x = 125,009.53

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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.