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Finding the Fourth Proportional to 127,956, 176,579.28 and 71,367.42

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Solution

The fourth proportional to 127,956, 176,579.28 and 71,367.42 is: 98,487.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,956 : 176,579.28 = 71,367.42 : x
  2. Step 2: Convert to fraction form
    127,956/176,579.28 = 71,367.42/x
  3. Step 3: Cross multiply
    127,956x = 176,579.28 × 71,367.42
  4. Step 4: Simplify right side
    127,956x = 12,602,007,639.06
  5. Step 5: Solve for x
    x = 12,602,007,639.06/127,956
  6. Step 6: Final answer
    x = 98,487.04

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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.