Home / 88,897.20-133,418.70-85,981.20

Finding the Fourth Proportional to 88,897.20, 133,418.70 and 85,981.20

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Solution

The fourth proportional to 88,897.20, 133,418.70 and 85,981.20 is: 129,042.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,897.20 : 133,418.70 = 85,981.20 : x
  2. Step 2: Convert to fraction form
    88,897.20/133,418.70 = 85,981.20/x
  3. Step 3: Cross multiply
    88,897.20x = 133,418.70 × 85,981.20
  4. Step 4: Simplify right side
    88,897.20x = 11,471,499,928.44
  5. Step 5: Solve for x
    x = 11,471,499,928.44/88,897.20
  6. Step 6: Final answer
    x = 129,042.31

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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.