Home / 112,713.47-155,517.89-66,749.90

Finding the Fourth Proportional to 112,713.47, 155,517.89 and 66,749.90

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Solution

The fourth proportional to 112,713.47, 155,517.89 and 66,749.90 is: 92,099.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,713.47 : 155,517.89 = 66,749.90 : x
  2. Step 2: Convert to fraction form
    112,713.47/155,517.89 = 66,749.90/x
  3. Step 3: Cross multiply
    112,713.47x = 155,517.89 × 66,749.90
  4. Step 4: Simplify right side
    112,713.47x = 10,380,802,494.37
  5. Step 5: Solve for x
    x = 10,380,802,494.37/112,713.47
  6. Step 6: Final answer
    x = 92,099.05

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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.