Home / 129,192.16-193,618.14-69,213.69

Finding the Fourth Proportional to 129,192.16, 193,618.14 and 69,213.69

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Solution

The fourth proportional to 129,192.16, 193,618.14 and 69,213.69 is: 103,729.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,192.16 : 193,618.14 = 69,213.69 : x
  2. Step 2: Convert to fraction form
    129,192.16/193,618.14 = 69,213.69/x
  3. Step 3: Cross multiply
    129,192.16x = 193,618.14 × 69,213.69
  4. Step 4: Simplify right side
    129,192.16x = 13,401,024,952.25
  5. Step 5: Solve for x
    x = 13,401,024,952.25/129,192.16
  6. Step 6: Final answer
    x = 103,729.40

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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.