Home / 127,990.50-176,626.89-71,401.86

Finding the Fourth Proportional to 127,990.50, 176,626.89 and 71,401.86

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Solution

The fourth proportional to 127,990.50, 176,626.89 and 71,401.86 is: 98,534.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,990.50 : 176,626.89 = 71,401.86 : x
  2. Step 2: Convert to fraction form
    127,990.50/176,626.89 = 71,401.86/x
  3. Step 3: Cross multiply
    127,990.50x = 176,626.89 × 71,401.86
  4. Step 4: Simplify right side
    127,990.50x = 12,611,488,472.02
  5. Step 5: Solve for x
    x = 12,611,488,472.02/127,990.50
  6. Step 6: Final answer
    x = 98,534.57

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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.