Home / 125,100.53-172,635.36-71,384.57

Finding the Fourth Proportional to 125,100.53, 172,635.36 and 71,384.57

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Solution

The fourth proportional to 125,100.53, 172,635.36 and 71,384.57 is: 98,508.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,100.53 : 172,635.36 = 71,384.57 : x
  2. Step 2: Convert to fraction form
    125,100.53/172,635.36 = 71,384.57/x
  3. Step 3: Cross multiply
    125,100.53x = 172,635.36 × 71,384.57
  4. Step 4: Simplify right side
    125,100.53x = 12,323,500,940.40
  5. Step 5: Solve for x
    x = 12,323,500,940.40/125,100.53
  6. Step 6: Final answer
    x = 98,508.78

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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.