Home / 125,609.18-172,834.21-122,619.83

Finding the Fourth Proportional to 125,609.18, 172,834.21 and 122,619.83

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Solution

The fourth proportional to 125,609.18, 172,834.21 and 122,619.83 is: 168,720.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,609.18 : 172,834.21 = 122,619.83 : x
  2. Step 2: Convert to fraction form
    125,609.18/172,834.21 = 122,619.83/x
  3. Step 3: Cross multiply
    125,609.18x = 172,834.21 × 122,619.83
  4. Step 4: Simplify right side
    125,609.18x = 21,192,900,047.75
  5. Step 5: Solve for x
    x = 21,192,900,047.75/125,609.18
  6. Step 6: Final answer
    x = 168,720.95

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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.