Home / 125,031.10-172,363.56-89,158.90

Finding the Fourth Proportional to 125,031.10, 172,363.56 and 89,158.90

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Solution

The fourth proportional to 125,031.10, 172,363.56 and 89,158.90 is: 122,911.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,031.10 : 172,363.56 = 89,158.90 : x
  2. Step 2: Convert to fraction form
    125,031.10/172,363.56 = 89,158.90/x
  3. Step 3: Cross multiply
    125,031.10x = 172,363.56 × 89,158.90
  4. Step 4: Simplify right side
    125,031.10x = 15,367,745,409.68
  5. Step 5: Solve for x
    x = 15,367,745,409.68/125,031.10
  6. Step 6: Final answer
    x = 122,911.38

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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.