Home / 113,516.56-156,489.19-79,419.41

Finding the Fourth Proportional to 113,516.56, 156,489.19 and 79,419.41

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Solution

The fourth proportional to 113,516.56, 156,489.19 and 79,419.41 is: 109,484.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,516.56 : 156,489.19 = 79,419.41 : x
  2. Step 2: Convert to fraction form
    113,516.56/156,489.19 = 79,419.41/x
  3. Step 3: Cross multiply
    113,516.56x = 156,489.19 × 79,419.41
  4. Step 4: Simplify right side
    113,516.56x = 12,428,279,141.18
  5. Step 5: Solve for x
    x = 12,428,279,141.18/113,516.56
  6. Step 6: Final answer
    x = 109,484.28

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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.