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Finding the Fourth Proportional to 125,104.56, 172,646.01 and 68,516.34

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Solution

The fourth proportional to 125,104.56, 172,646.01 and 68,516.34 is: 94,553.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,104.56 : 172,646.01 = 68,516.34 : x
  2. Step 2: Convert to fraction form
    125,104.56/172,646.01 = 68,516.34/x
  3. Step 3: Cross multiply
    125,104.56x = 172,646.01 × 68,516.34
  4. Step 4: Simplify right side
    125,104.56x = 11,829,072,720.80
  5. Step 5: Solve for x
    x = 11,829,072,720.80/125,104.56
  6. Step 6: Final answer
    x = 94,553.49

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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.