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Finding the Fourth Proportional to 153,355.71, 229,727.25 and 121,819.17

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Solution

The fourth proportional to 153,355.71, 229,727.25 and 121,819.17 is: 182,485.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,355.71 : 229,727.25 = 121,819.17 : x
  2. Step 2: Convert to fraction form
    153,355.71/229,727.25 = 121,819.17/x
  3. Step 3: Cross multiply
    153,355.71x = 229,727.25 × 121,819.17
  4. Step 4: Simplify right side
    153,355.71x = 27,985,182,921.38
  5. Step 5: Solve for x
    x = 27,985,182,921.38/153,355.71
  6. Step 6: Final answer
    x = 182,485.43

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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.