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Finding the Fourth Proportional to 125,730, 173,512.26 and 69,140.16

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Solution

The fourth proportional to 125,730, 173,512.26 and 69,140.16 is: 95,416.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,730 : 173,512.26 = 69,140.16 : x
  2. Step 2: Convert to fraction form
    125,730/173,512.26 = 69,140.16/x
  3. Step 3: Cross multiply
    125,730x = 173,512.26 × 69,140.16
  4. Step 4: Simplify right side
    125,730x = 11,996,665,418.36
  5. Step 5: Solve for x
    x = 11,996,665,418.36/125,730
  6. Step 6: Final answer
    x = 95,416.09

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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.