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Finding the Fourth Proportional to 125,757.59, 173,457.59 and 85,401.29

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Solution

The fourth proportional to 125,757.59, 173,457.59 and 85,401.29 is: 117,794.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,757.59 : 173,457.59 = 85,401.29 : x
  2. Step 2: Convert to fraction form
    125,757.59/173,457.59 = 85,401.29/x
  3. Step 3: Cross multiply
    125,757.59x = 173,457.59 × 85,401.29
  4. Step 4: Simplify right side
    125,757.59x = 14,813,501,946.29
  5. Step 5: Solve for x
    x = 14,813,501,946.29/125,757.59
  6. Step 6: Final answer
    x = 117,794.10

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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.