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Finding the Fourth Proportional to 88,981.60, 133,472.40 and 83,912.80

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Solution

The fourth proportional to 88,981.60, 133,472.40 and 83,912.80 is: 125,869.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,981.60 : 133,472.40 = 83,912.80 : x
  2. Step 2: Convert to fraction form
    88,981.60/133,472.40 = 83,912.80/x
  3. Step 3: Cross multiply
    88,981.60x = 133,472.40 × 83,912.80
  4. Step 4: Simplify right side
    88,981.60x = 11,200,042,806.72
  5. Step 5: Solve for x
    x = 11,200,042,806.72/88,981.60
  6. Step 6: Final answer
    x = 125,869.20

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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.