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Finding the Fourth Proportional to 170,654.64, 256,068.36 and 115,134

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Solution

The fourth proportional to 170,654.64, 256,068.36 and 115,134 is: 172,759.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,654.64 : 256,068.36 = 115,134 : x
  2. Step 2: Convert to fraction form
    170,654.64/256,068.36 = 115,134/x
  3. Step 3: Cross multiply
    170,654.64x = 256,068.36 × 115,134
  4. Step 4: Simplify right side
    170,654.64x = 29,482,174,560.24
  5. Step 5: Solve for x
    x = 29,482,174,560.24/170,654.64
  6. Step 6: Final answer
    x = 172,759.29

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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.