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Finding the Fourth Proportional to 122,113.60, 182,951.70 and 108,116.80

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Solution

The fourth proportional to 122,113.60, 182,951.70 and 108,116.80 is: 161,981.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,113.60 : 182,951.70 = 108,116.80 : x
  2. Step 2: Convert to fraction form
    122,113.60/182,951.70 = 108,116.80/x
  3. Step 3: Cross multiply
    122,113.60x = 182,951.70 × 108,116.80
  4. Step 4: Simplify right side
    122,113.60x = 19,780,152,358.56
  5. Step 5: Solve for x
    x = 19,780,152,358.56/122,113.60
  6. Step 6: Final answer
    x = 161,981.57

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1.5x scale

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.