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Finding the Fourth Proportional to 125,034.78, 172,548.12 and 68,446.26

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Solution

The fourth proportional to 125,034.78, 172,548.12 and 68,446.26 is: 94,455.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,034.78 : 172,548.12 = 68,446.26 : x
  2. Step 2: Convert to fraction form
    125,034.78/172,548.12 = 68,446.26/x
  3. Step 3: Cross multiply
    125,034.78x = 172,548.12 × 68,446.26
  4. Step 4: Simplify right side
    125,034.78x = 11,810,273,484.03
  5. Step 5: Solve for x
    x = 11,810,273,484.03/125,034.78
  6. Step 6: Final answer
    x = 94,455.91

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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.