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Finding the Fourth Proportional to 145,139.68, 217,726.76 and 88,953.76

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Solution

The fourth proportional to 145,139.68, 217,726.76 and 88,953.76 is: 133,441.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,139.68 : 217,726.76 = 88,953.76 : x
  2. Step 2: Convert to fraction form
    145,139.68/217,726.76 = 88,953.76/x
  3. Step 3: Cross multiply
    145,139.68x = 217,726.76 × 88,953.76
  4. Step 4: Simplify right side
    145,139.68x = 19,367,613,954.62
  5. Step 5: Solve for x
    x = 19,367,613,954.62/145,139.68
  6. Step 6: Final answer
    x = 133,441.21

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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.