Home / 113,806.11-156,963.63-72,974.13

Finding the Fourth Proportional to 113,806.11, 156,963.63 and 72,974.13

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Solution

The fourth proportional to 113,806.11, 156,963.63 and 72,974.13 is: 100,647.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,806.11 : 156,963.63 = 72,974.13 : x
  2. Step 2: Convert to fraction form
    113,806.11/156,963.63 = 72,974.13/x
  3. Step 3: Cross multiply
    113,806.11x = 156,963.63 × 72,974.13
  4. Step 4: Simplify right side
    113,806.11x = 11,454,284,340.89
  5. Step 5: Solve for x
    x = 11,454,284,340.89/113,806.11
  6. Step 6: Final answer
    x = 100,647.36

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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.