Home / 129,223.12-193,834.68-71,223.76

Finding the Fourth Proportional to 129,223.12, 193,834.68 and 71,223.76

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Solution

The fourth proportional to 129,223.12, 193,834.68 and 71,223.76 is: 106,835.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,223.12 : 193,834.68 = 71,223.76 : x
  2. Step 2: Convert to fraction form
    129,223.12/193,834.68 = 71,223.76/x
  3. Step 3: Cross multiply
    129,223.12x = 193,834.68 × 71,223.76
  4. Step 4: Simplify right side
    129,223.12x = 13,805,634,728.00
  5. Step 5: Solve for x
    x = 13,805,634,728.00/129,223.12
  6. Step 6: Final answer
    x = 106,835.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.