Home / 120,735.20-181,275.60-68,247.20

Finding the Fourth Proportional to 120,735.20, 181,275.60 and 68,247.20

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Solution

The fourth proportional to 120,735.20, 181,275.60 and 68,247.20 is: 102,468.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,735.20 : 181,275.60 = 68,247.20 : x
  2. Step 2: Convert to fraction form
    120,735.20/181,275.60 = 68,247.20/x
  3. Step 3: Cross multiply
    120,735.20x = 181,275.60 × 68,247.20
  4. Step 4: Simplify right side
    120,735.20x = 12,371,552,128.32
  5. Step 5: Solve for x
    x = 12,371,552,128.32/120,735.20
  6. Step 6: Final answer
    x = 102,468.48

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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.