Home / 129,188.16-193,612.14-69,209.69

Finding the Fourth Proportional to 129,188.16, 193,612.14 and 69,209.69

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Solution

The fourth proportional to 129,188.16, 193,612.14 and 69,209.69 is: 103,723.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,188.16 : 193,612.14 = 69,209.69 : x
  2. Step 2: Convert to fraction form
    129,188.16/193,612.14 = 69,209.69/x
  3. Step 3: Cross multiply
    129,188.16x = 193,612.14 × 69,209.69
  4. Step 4: Simplify right side
    129,188.16x = 13,399,835,221.58
  5. Step 5: Solve for x
    x = 13,399,835,221.58/129,188.16
  6. Step 6: Final answer
    x = 103,723.40

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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.