Home / 148,568.72-205,024.20-81,499.28

Finding the Fourth Proportional to 148,568.72, 205,024.20 and 81,499.28

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Solution

The fourth proportional to 148,568.72, 205,024.20 and 81,499.28 is: 112,468.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,568.72 : 205,024.20 = 81,499.28 : x
  2. Step 2: Convert to fraction form
    148,568.72/205,024.20 = 81,499.28/x
  3. Step 3: Cross multiply
    148,568.72x = 205,024.20 × 81,499.28
  4. Step 4: Simplify right side
    148,568.72x = 16,709,324,682.58
  5. Step 5: Solve for x
    x = 16,709,324,682.58/148,568.72
  6. Step 6: Final answer
    x = 112,468.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.