Home / 100,862.60-139,191.30-55,542.19

Finding the Fourth Proportional to 100,862.60, 139,191.30 and 55,542.19

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Solution

The fourth proportional to 100,862.60, 139,191.30 and 55,542.19 is: 76,648.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,862.60 : 139,191.30 = 55,542.19 : x
  2. Step 2: Convert to fraction form
    100,862.60/139,191.30 = 55,542.19/x
  3. Step 3: Cross multiply
    100,862.60x = 139,191.30 × 55,542.19
  4. Step 4: Simplify right side
    100,862.60x = 7,730,989,630.95
  5. Step 5: Solve for x
    x = 7,730,989,630.95/100,862.60
  6. Step 6: Final answer
    x = 76,648.72

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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.