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Finding the Fourth Proportional to 125,172, 172,737.36 and 68,585.52

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Solution

The fourth proportional to 125,172, 172,737.36 and 68,585.52 is: 94,648.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,172 : 172,737.36 = 68,585.52 : x
  2. Step 2: Convert to fraction form
    125,172/172,737.36 = 68,585.52/x
  3. Step 3: Cross multiply
    125,172x = 172,737.36 × 68,585.52
  4. Step 4: Simplify right side
    125,172x = 11,847,281,659.03
  5. Step 5: Solve for x
    x = 11,847,281,659.03/125,172
  6. Step 6: Final answer
    x = 94,648.02

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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.