Home / 136,853.75-188,792.61-85,840.90

Finding the Fourth Proportional to 136,853.75, 188,792.61 and 85,840.90

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Solution

The fourth proportional to 136,853.75, 188,792.61 and 85,840.90 is: 118,419.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,853.75 : 188,792.61 = 85,840.90 : x
  2. Step 2: Convert to fraction form
    136,853.75/188,792.61 = 85,840.90/x
  3. Step 3: Cross multiply
    136,853.75x = 188,792.61 × 85,840.90
  4. Step 4: Simplify right side
    136,853.75x = 16,206,126,761.86
  5. Step 5: Solve for x
    x = 16,206,126,761.86/136,853.75
  6. Step 6: Final answer
    x = 118,419.31

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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.