Home / 125,142.38-172,699.26-71,426.29

Finding the Fourth Proportional to 125,142.38, 172,699.26 and 71,426.29

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Solution

The fourth proportional to 125,142.38, 172,699.26 and 71,426.29 is: 98,569.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,142.38 : 172,699.26 = 71,426.29 : x
  2. Step 2: Convert to fraction form
    125,142.38/172,699.26 = 71,426.29/x
  3. Step 3: Cross multiply
    125,142.38x = 172,699.26 × 71,426.29
  4. Step 4: Simplify right side
    125,142.38x = 12,335,267,427.55
  5. Step 5: Solve for x
    x = 12,335,267,427.55/125,142.38
  6. Step 6: Final answer
    x = 98,569.86

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1.5x scale

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.