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Finding the Fourth Proportional to 88,438.80, 132,658.20 and 70,942.80

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Solution

The fourth proportional to 88,438.80, 132,658.20 and 70,942.80 is: 106,414.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,438.80 : 132,658.20 = 70,942.80 : x
  2. Step 2: Convert to fraction form
    88,438.80/132,658.20 = 70,942.80/x
  3. Step 3: Cross multiply
    88,438.80x = 132,658.20 × 70,942.80
  4. Step 4: Simplify right side
    88,438.80x = 9,411,144,150.96
  5. Step 5: Solve for x
    x = 9,411,144,150.96/88,438.80
  6. Step 6: Final answer
    x = 106,414.20

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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.