Home / 88,405.48-131,957.33-81,018.28

Finding the Fourth Proportional to 88,405.48, 131,957.33 and 81,018.28

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Solution

The fourth proportional to 88,405.48, 131,957.33 and 81,018.28 is: 120,930.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,405.48 : 131,957.33 = 81,018.28 : x
  2. Step 2: Convert to fraction form
    88,405.48/131,957.33 = 81,018.28/x
  3. Step 3: Cross multiply
    88,405.48x = 131,957.33 × 81,018.28
  4. Step 4: Simplify right side
    88,405.48x = 10,690,955,909.99
  5. Step 5: Solve for x
    x = 10,690,955,909.99/88,405.48
  6. Step 6: Final answer
    x = 120,930.92

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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.