Home / 100,112.90-138,142.17-59,818.15

Finding the Fourth Proportional to 100,112.90, 138,142.17 and 59,818.15

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Solution

The fourth proportional to 100,112.90, 138,142.17 and 59,818.15 is: 82,540.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,112.90 : 138,142.17 = 59,818.15 : x
  2. Step 2: Convert to fraction form
    100,112.90/138,142.17 = 59,818.15/x
  3. Step 3: Cross multiply
    100,112.90x = 138,142.17 × 59,818.15
  4. Step 4: Simplify right side
    100,112.90x = 8,263,409,046.39
  5. Step 5: Solve for x
    x = 8,263,409,046.39/100,112.90
  6. Step 6: Final answer
    x = 82,540.90

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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.