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Finding the Fourth Proportional to 88,294.50, 131,610 and 81,208.62

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Solution

The fourth proportional to 88,294.50, 131,610 and 81,208.62 is: 121,047.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,294.50 : 131,610 = 81,208.62 : x
  2. Step 2: Convert to fraction form
    88,294.50/131,610 = 81,208.62/x
  3. Step 3: Cross multiply
    88,294.50x = 131,610 × 81,208.62
  4. Step 4: Simplify right side
    88,294.50x = 10,687,866,478.20
  5. Step 5: Solve for x
    x = 10,687,866,478.20/88,294.50
  6. Step 6: Final answer
    x = 121,047.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.