Home / 120,685.20-180,986.79-41,780.97

Finding the Fourth Proportional to 120,685.20, 180,986.79 and 41,780.97

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Solution

The fourth proportional to 120,685.20, 180,986.79 and 41,780.97 is: 62,657.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,685.20 : 180,986.79 = 41,780.97 : x
  2. Step 2: Convert to fraction form
    120,685.20/180,986.79 = 41,780.97/x
  3. Step 3: Cross multiply
    120,685.20x = 180,986.79 × 41,780.97
  4. Step 4: Simplify right side
    120,685.20x = 7,561,803,643.39
  5. Step 5: Solve for x
    x = 7,561,803,643.39/120,685.20
  6. Step 6: Final answer
    x = 62,657.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.