Home / 148,825.12-205,378.80-81,757.12

Finding the Fourth Proportional to 148,825.12, 205,378.80 and 81,757.12

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Solution

The fourth proportional to 148,825.12, 205,378.80 and 81,757.12 is: 112,824.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,825.12 : 205,378.80 = 81,757.12 : x
  2. Step 2: Convert to fraction form
    148,825.12/205,378.80 = 81,757.12/x
  3. Step 3: Cross multiply
    148,825.12x = 205,378.80 × 81,757.12
  4. Step 4: Simplify right side
    148,825.12x = 16,791,179,197.06
  5. Step 5: Solve for x
    x = 16,791,179,197.06/148,825.12
  6. Step 6: Final answer
    x = 112,824.90

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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.