Home / 132,487.90-182,880.85-78,772.78

Finding the Fourth Proportional to 132,487.90, 182,880.85 and 78,772.78

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Solution

The fourth proportional to 132,487.90, 182,880.85 and 78,772.78 is: 108,734.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,487.90 : 182,880.85 = 78,772.78 : x
  2. Step 2: Convert to fraction form
    132,487.90/182,880.85 = 78,772.78/x
  3. Step 3: Cross multiply
    132,487.90x = 182,880.85 × 78,772.78
  4. Step 4: Simplify right side
    132,487.90x = 14,406,032,963.26
  5. Step 5: Solve for x
    x = 14,406,032,963.26/132,487.90
  6. Step 6: Final answer
    x = 108,734.71

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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.