Home / 120,278.16-180,413.55-57,143.70

Finding the Fourth Proportional to 120,278.16, 180,413.55 and 57,143.70

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Solution

The fourth proportional to 120,278.16, 180,413.55 and 57,143.70 is: 85,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,278.16 : 180,413.55 = 57,143.70 : x
  2. Step 2: Convert to fraction form
    120,278.16/180,413.55 = 57,143.70/x
  3. Step 3: Cross multiply
    120,278.16x = 180,413.55 × 57,143.70
  4. Step 4: Simplify right side
    120,278.16x = 10,309,497,777.14
  5. Step 5: Solve for x
    x = 10,309,497,777.14/120,278.16
  6. Step 6: Final answer
    x = 85,713.80

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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.