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Finding the Fourth Proportional to 122,423.80, 168,961.33 and 68,711.76

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Solution

The fourth proportional to 122,423.80, 168,961.33 and 68,711.76 is: 94,831.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,423.80 : 168,961.33 = 68,711.76 : x
  2. Step 2: Convert to fraction form
    122,423.80/168,961.33 = 68,711.76/x
  3. Step 3: Cross multiply
    122,423.80x = 168,961.33 × 68,711.76
  4. Step 4: Simplify right side
    122,423.80x = 11,609,630,105.62
  5. Step 5: Solve for x
    x = 11,609,630,105.62/122,423.80
  6. Step 6: Final answer
    x = 94,831.48

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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.