Home / 125,137.10-172,679.63-71,414.86

Finding the Fourth Proportional to 125,137.10, 172,679.63 and 71,414.86

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Solution

The fourth proportional to 125,137.10, 172,679.63 and 71,414.86 is: 98,547.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,137.10 : 172,679.63 = 71,414.86 : x
  2. Step 2: Convert to fraction form
    125,137.10/172,679.63 = 71,414.86/x
  3. Step 3: Cross multiply
    125,137.10x = 172,679.63 × 71,414.86
  4. Step 4: Simplify right side
    125,137.10x = 12,331,891,601.30
  5. Step 5: Solve for x
    x = 12,331,891,601.30/125,137.10
  6. Step 6: Final answer
    x = 98,547.05

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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.