Home / 115,147.50-158,937.76-72,734.28

Finding the Fourth Proportional to 115,147.50, 158,937.76 and 72,734.28

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Solution

The fourth proportional to 115,147.50, 158,937.76 and 72,734.28 is: 100,394.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,147.50 : 158,937.76 = 72,734.28 : x
  2. Step 2: Convert to fraction form
    115,147.50/158,937.76 = 72,734.28/x
  3. Step 3: Cross multiply
    115,147.50x = 158,937.76 × 72,734.28
  4. Step 4: Simplify right side
    115,147.50x = 11,560,223,538.41
  5. Step 5: Solve for x
    x = 11,560,223,538.41/115,147.50
  6. Step 6: Final answer
    x = 100,394.92

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1.5x scale

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.