Home / 87,166.60-120,146.16-61,640.04

Finding the Fourth Proportional to 87,166.60, 120,146.16 and 61,640.04

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Solution

The fourth proportional to 87,166.60, 120,146.16 and 61,640.04 is: 84,961.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,166.60 : 120,146.16 = 61,640.04 : x
  2. Step 2: Convert to fraction form
    87,166.60/120,146.16 = 61,640.04/x
  3. Step 3: Cross multiply
    87,166.60x = 120,146.16 × 61,640.04
  4. Step 4: Simplify right side
    87,166.60x = 7,405,814,108.25
  5. Step 5: Solve for x
    x = 7,405,814,108.25/87,166.60
  6. Step 6: Final answer
    x = 84,961.60

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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.