Home / 99,981.44-149,663.28-54,890

Finding the Fourth Proportional to 99,981.44, 149,663.28 and 54,890

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Solution

The fourth proportional to 99,981.44, 149,663.28 and 54,890 is: 82,165.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,981.44 : 149,663.28 = 54,890 : x
  2. Step 2: Convert to fraction form
    99,981.44/149,663.28 = 54,890/x
  3. Step 3: Cross multiply
    99,981.44x = 149,663.28 × 54,890
  4. Step 4: Simplify right side
    99,981.44x = 8,215,017,439.20
  5. Step 5: Solve for x
    x = 8,215,017,439.20/99,981.44
  6. Step 6: Final answer
    x = 82,165.42

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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.