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Finding the Fourth Proportional to 125,235.16, 172,824.78 and 68,650.20

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Solution

The fourth proportional to 125,235.16, 172,824.78 and 68,650.20 is: 94,737.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,235.16 : 172,824.78 = 68,650.20 : x
  2. Step 2: Convert to fraction form
    125,235.16/172,824.78 = 68,650.20/x
  3. Step 3: Cross multiply
    125,235.16x = 172,824.78 × 68,650.20
  4. Step 4: Simplify right side
    125,235.16x = 11,864,455,711.96
  5. Step 5: Solve for x
    x = 11,864,455,711.96/125,235.16
  6. Step 6: Final answer
    x = 94,737.42

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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.