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Finding the Fourth Proportional to 150,641.28, 207,891.48 and 90,221.76

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Solution

The fourth proportional to 150,641.28, 207,891.48 and 90,221.76 is: 124,509.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,641.28 : 207,891.48 = 90,221.76 : x
  2. Step 2: Convert to fraction form
    150,641.28/207,891.48 = 90,221.76/x
  3. Step 3: Cross multiply
    150,641.28x = 207,891.48 × 90,221.76
  4. Step 4: Simplify right side
    150,641.28x = 18,756,335,214.60
  5. Step 5: Solve for x
    x = 18,756,335,214.60/150,641.28
  6. Step 6: Final answer
    x = 124,509.93

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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.