Home / 88,340.70-132,511.05-78,663.90

Finding the Fourth Proportional to 88,340.70, 132,511.05 and 78,663.90

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Solution

The fourth proportional to 88,340.70, 132,511.05 and 78,663.90 is: 117,995.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,340.70 : 132,511.05 = 78,663.90 : x
  2. Step 2: Convert to fraction form
    88,340.70/132,511.05 = 78,663.90/x
  3. Step 3: Cross multiply
    88,340.70x = 132,511.05 × 78,663.90
  4. Step 4: Simplify right side
    88,340.70x = 10,423,835,986.10
  5. Step 5: Solve for x
    x = 10,423,835,986.10/88,340.70
  6. Step 6: Final answer
    x = 117,995.85

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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.