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Finding the Fourth Proportional to 125,076.01, 172,488.28 and 115,787.34

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Solution

The fourth proportional to 125,076.01, 172,488.28 and 115,787.34 is: 159,678.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,076.01 : 172,488.28 = 115,787.34 : x
  2. Step 2: Convert to fraction form
    125,076.01/172,488.28 = 115,787.34/x
  3. Step 3: Cross multiply
    125,076.01x = 172,488.28 × 115,787.34
  4. Step 4: Simplify right side
    125,076.01x = 19,971,957,681.00
  5. Step 5: Solve for x
    x = 19,971,957,681.00/125,076.01
  6. Step 6: Final answer
    x = 159,678.56

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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.