Home / 125,029.10-172,360.80-89,156.90

Finding the Fourth Proportional to 125,029.10, 172,360.80 and 89,156.90

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Solution

The fourth proportional to 125,029.10, 172,360.80 and 89,156.90 is: 122,908.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,029.10 : 172,360.80 = 89,156.90 : x
  2. Step 2: Convert to fraction form
    125,029.10/172,360.80 = 89,156.90/x
  3. Step 3: Cross multiply
    125,029.10x = 172,360.80 × 89,156.90
  4. Step 4: Simplify right side
    125,029.10x = 15,367,154,609.52
  5. Step 5: Solve for x
    x = 15,367,154,609.52/125,029.10
  6. Step 6: Final answer
    x = 122,908.62

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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.