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Finding the Fourth Proportional to 88,235.60, 132,612.60 and 76,830.80

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Solution

The fourth proportional to 88,235.60, 132,612.60 and 76,830.80 is: 115,471.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,235.60 : 132,612.60 = 76,830.80 : x
  2. Step 2: Convert to fraction form
    88,235.60/132,612.60 = 76,830.80/x
  3. Step 3: Cross multiply
    88,235.60x = 132,612.60 × 76,830.80
  4. Step 4: Simplify right side
    88,235.60x = 10,188,732,148.08
  5. Step 5: Solve for x
    x = 10,188,732,148.08/88,235.60
  6. Step 6: Final answer
    x = 115,471.90

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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.