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Finding the Fourth Proportional to 154,159.92, 231,236.28 and 71,053.92

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Solution

The fourth proportional to 154,159.92, 231,236.28 and 71,053.92 is: 106,579.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,159.92 : 231,236.28 = 71,053.92 : x
  2. Step 2: Convert to fraction form
    154,159.92/231,236.28 = 71,053.92/x
  3. Step 3: Cross multiply
    154,159.92x = 231,236.28 × 71,053.92
  4. Step 4: Simplify right side
    154,159.92x = 16,430,244,140.22
  5. Step 5: Solve for x
    x = 16,430,244,140.22/154,159.92
  6. Step 6: Final answer
    x = 106,579.22

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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.