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Finding the Fourth Proportional to 125,105.06, 172,645.06 and 68,516.42

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Solution

The fourth proportional to 125,105.06, 172,645.06 and 68,516.42 is: 94,552.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,105.06 : 172,645.06 = 68,516.42 : x
  2. Step 2: Convert to fraction form
    125,105.06/172,645.06 = 68,516.42/x
  3. Step 3: Cross multiply
    125,105.06x = 172,645.06 × 68,516.42
  4. Step 4: Simplify right side
    125,105.06x = 11,829,021,441.89
  5. Step 5: Solve for x
    x = 11,829,021,441.89/125,105.06
  6. Step 6: Final answer
    x = 94,552.70

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1.5x scale

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.