Home / 125,121.48-172,680.08-71,414.64

Finding the Fourth Proportional to 125,121.48, 172,680.08 and 71,414.64

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Solution

The fourth proportional to 125,121.48, 172,680.08 and 71,414.64 is: 98,559.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,121.48 : 172,680.08 = 71,414.64 : x
  2. Step 2: Convert to fraction form
    125,121.48/172,680.08 = 71,414.64/x
  3. Step 3: Cross multiply
    125,121.48x = 172,680.08 × 71,414.64
  4. Step 4: Simplify right side
    125,121.48x = 12,331,885,748.37
  5. Step 5: Solve for x
    x = 12,331,885,748.37/125,121.48
  6. Step 6: Final answer
    x = 98,559.30

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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.