Home / 125,123.47-172,668.43-71,407.10

Finding the Fourth Proportional to 125,123.47, 172,668.43 and 71,407.10

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Solution

The fourth proportional to 125,123.47, 172,668.43 and 71,407.10 is: 98,540.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,123.47 : 172,668.43 = 71,407.10 : x
  2. Step 2: Convert to fraction form
    125,123.47/172,668.43 = 71,407.10/x
  3. Step 3: Cross multiply
    125,123.47x = 172,668.43 × 71,407.10
  4. Step 4: Simplify right side
    125,123.47x = 12,329,751,847.85
  5. Step 5: Solve for x
    x = 12,329,751,847.85/125,123.47
  6. Step 6: Final answer
    x = 98,540.68

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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.