Home / 120,867.02-180,413.28-111,960.46

Finding the Fourth Proportional to 120,867.02, 180,413.28 and 111,960.46

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Solution

The fourth proportional to 120,867.02, 180,413.28 and 111,960.46 is: 167,118.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,867.02 : 180,413.28 = 111,960.46 : x
  2. Step 2: Convert to fraction form
    120,867.02/180,413.28 = 111,960.46/x
  3. Step 3: Cross multiply
    120,867.02x = 180,413.28 × 111,960.46
  4. Step 4: Simplify right side
    120,867.02x = 20,199,153,818.91
  5. Step 5: Solve for x
    x = 20,199,153,818.91/120,867.02
  6. Step 6: Final answer
    x = 167,118.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.