Home / 120,320.22-180,657.75-67,116.15

Finding the Fourth Proportional to 120,320.22, 180,657.75 and 67,116.15

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Solution

The fourth proportional to 120,320.22, 180,657.75 and 67,116.15 is: 100,773.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,320.22 : 180,657.75 = 67,116.15 : x
  2. Step 2: Convert to fraction form
    120,320.22/180,657.75 = 67,116.15/x
  3. Step 3: Cross multiply
    120,320.22x = 180,657.75 × 67,116.15
  4. Step 4: Simplify right side
    120,320.22x = 12,125,052,647.66
  5. Step 5: Solve for x
    x = 12,125,052,647.66/120,320.22
  6. Step 6: Final answer
    x = 100,773.19

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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.