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Finding the Fourth Proportional to 126,117, 174,042.66 and 69,530.40

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Solution

The fourth proportional to 126,117, 174,042.66 and 69,530.40 is: 95,952.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,117 : 174,042.66 = 69,530.40 : x
  2. Step 2: Convert to fraction form
    126,117/174,042.66 = 69,530.40/x
  3. Step 3: Cross multiply
    126,117x = 174,042.66 × 69,530.40
  4. Step 4: Simplify right side
    126,117x = 12,101,255,766.86
  5. Step 5: Solve for x
    x = 12,101,255,766.86/126,117
  6. Step 6: Final answer
    x = 95,952.61

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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.