Home / 113,144.45-156,167.39-65,390.90

Finding the Fourth Proportional to 113,144.45, 156,167.39 and 65,390.90

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Solution

The fourth proportional to 113,144.45, 156,167.39 and 65,390.90 is: 90,255.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,144.45 : 156,167.39 = 65,390.90 : x
  2. Step 2: Convert to fraction form
    113,144.45/156,167.39 = 65,390.90/x
  3. Step 3: Cross multiply
    113,144.45x = 156,167.39 × 65,390.90
  4. Step 4: Simplify right side
    113,144.45x = 10,211,925,565.39
  5. Step 5: Solve for x
    x = 10,211,925,565.39/113,144.45
  6. Step 6: Final answer
    x = 90,255.65

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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.