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Finding the Fourth Proportional to 125,201.52, 172,787.46 and 77,482.62

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Solution

The fourth proportional to 125,201.52, 172,787.46 and 77,482.62 is: 106,931.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,201.52 : 172,787.46 = 77,482.62 : x
  2. Step 2: Convert to fraction form
    125,201.52/172,787.46 = 77,482.62/x
  3. Step 3: Cross multiply
    125,201.52x = 172,787.46 × 77,482.62
  4. Step 4: Simplify right side
    125,201.52x = 13,388,025,103.95
  5. Step 5: Solve for x
    x = 13,388,025,103.95/125,201.52
  6. Step 6: Final answer
    x = 106,931.81

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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.