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Finding the Fourth Proportional to 88,165.80, 132,378.30 and 61,986.60

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Solution

The fourth proportional to 88,165.80, 132,378.30 and 61,986.60 is: 93,071.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,165.80 : 132,378.30 = 61,986.60 : x
  2. Step 2: Convert to fraction form
    88,165.80/132,378.30 = 61,986.60/x
  3. Step 3: Cross multiply
    88,165.80x = 132,378.30 × 61,986.60
  4. Step 4: Simplify right side
    88,165.80x = 8,205,680,730.78
  5. Step 5: Solve for x
    x = 8,205,680,730.78/88,165.80
  6. Step 6: Final answer
    x = 93,071.02

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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.