Home / 132,658.92-183,065.04-78,931.62

Finding the Fourth Proportional to 132,658.92, 183,065.04 and 78,931.62

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Solution

The fourth proportional to 132,658.92, 183,065.04 and 78,931.62 is: 108,923.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,658.92 : 183,065.04 = 78,931.62 : x
  2. Step 2: Convert to fraction form
    132,658.92/183,065.04 = 78,931.62/x
  3. Step 3: Cross multiply
    132,658.92x = 183,065.04 × 78,931.62
  4. Step 4: Simplify right side
    132,658.92x = 14,449,620,172.56
  5. Step 5: Solve for x
    x = 14,449,620,172.56/132,658.92
  6. Step 6: Final answer
    x = 108,923.10

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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.