Home / 132,136.52-182,436.20-78,438.78

Finding the Fourth Proportional to 132,136.52, 182,436.20 and 78,438.78

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Solution

The fourth proportional to 132,136.52, 182,436.20 and 78,438.78 is: 108,297.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,136.52 : 182,436.20 = 78,438.78 : x
  2. Step 2: Convert to fraction form
    132,136.52/182,436.20 = 78,438.78/x
  3. Step 3: Cross multiply
    132,136.52x = 182,436.20 × 78,438.78
  4. Step 4: Simplify right side
    132,136.52x = 14,310,072,857.79
  5. Step 5: Solve for x
    x = 14,310,072,857.79/132,136.52
  6. Step 6: Final answer
    x = 108,297.64

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1.5x scale

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.