Home / 126,949.95-175,111.27-81,686.75

Finding the Fourth Proportional to 126,949.95, 175,111.27 and 81,686.75

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Solution

The fourth proportional to 126,949.95, 175,111.27 and 81,686.75 is: 112,676.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,949.95 : 175,111.27 = 81,686.75 : x
  2. Step 2: Convert to fraction form
    126,949.95/175,111.27 = 81,686.75/x
  3. Step 3: Cross multiply
    126,949.95x = 175,111.27 × 81,686.75
  4. Step 4: Simplify right side
    126,949.95x = 14,304,269,454.90
  5. Step 5: Solve for x
    x = 14,304,269,454.90/126,949.95
  6. Step 6: Final answer
    x = 112,676.45

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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.