Home / 120,653.20-181,152.60-68,165.20

Finding the Fourth Proportional to 120,653.20, 181,152.60 and 68,165.20

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Solution

The fourth proportional to 120,653.20, 181,152.60 and 68,165.20 is: 102,345.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,653.20 : 181,152.60 = 68,165.20 : x
  2. Step 2: Convert to fraction form
    120,653.20/181,152.60 = 68,165.20/x
  3. Step 3: Cross multiply
    120,653.20x = 181,152.60 × 68,165.20
  4. Step 4: Simplify right side
    120,653.20x = 12,348,303,209.52
  5. Step 5: Solve for x
    x = 12,348,303,209.52/120,653.20
  6. Step 6: Final answer
    x = 102,345.43

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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.