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Finding the Fourth Proportional to 127,990.86, 176,626.13 and 70,630.71

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Solution

The fourth proportional to 127,990.86, 176,626.13 and 70,630.71 is: 97,469.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,990.86 : 176,626.13 = 70,630.71 : x
  2. Step 2: Convert to fraction form
    127,990.86/176,626.13 = 70,630.71/x
  3. Step 3: Cross multiply
    127,990.86x = 176,626.13 × 70,630.71
  4. Step 4: Simplify right side
    127,990.86x = 12,475,228,613.30
  5. Step 5: Solve for x
    x = 12,475,228,613.30/127,990.86
  6. Step 6: Final answer
    x = 97,469.68

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1.5x scale

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.