Home / 129,222.72-193,419.09-69,100.70

Finding the Fourth Proportional to 129,222.72, 193,419.09 and 69,100.70

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Solution

The fourth proportional to 129,222.72, 193,419.09 and 69,100.70 is: 103,429.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,222.72 : 193,419.09 = 69,100.70 : x
  2. Step 2: Convert to fraction form
    129,222.72/193,419.09 = 69,100.70/x
  3. Step 3: Cross multiply
    129,222.72x = 193,419.09 × 69,100.70
  4. Step 4: Simplify right side
    129,222.72x = 13,365,393,545.27
  5. Step 5: Solve for x
    x = 13,365,393,545.27/129,222.72
  6. Step 6: Final answer
    x = 103,429.13

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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.