Home / 120,987.89-166,911.05-75,586.85

Finding the Fourth Proportional to 120,987.89, 166,911.05 and 75,586.85

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Solution

The fourth proportional to 120,987.89, 166,911.05 and 75,586.85 is: 104,277.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,987.89 : 166,911.05 = 75,586.85 : x
  2. Step 2: Convert to fraction form
    120,987.89/166,911.05 = 75,586.85/x
  3. Step 3: Cross multiply
    120,987.89x = 166,911.05 × 75,586.85
  4. Step 4: Simplify right side
    120,987.89x = 12,616,279,854.10
  5. Step 5: Solve for x
    x = 12,616,279,854.10/120,987.89
  6. Step 6: Final answer
    x = 104,277.22

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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.