Home / 120,987.20-181,403.04-57,773.12

Finding the Fourth Proportional to 120,987.20, 181,403.04 and 57,773.12

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Solution

The fourth proportional to 120,987.20, 181,403.04 and 57,773.12 is: 86,622.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,987.20 : 181,403.04 = 57,773.12 : x
  2. Step 2: Convert to fraction form
    120,987.20/181,403.04 = 57,773.12/x
  3. Step 3: Cross multiply
    120,987.20x = 181,403.04 × 57,773.12
  4. Step 4: Simplify right side
    120,987.20x = 10,480,219,598.28
  5. Step 5: Solve for x
    x = 10,480,219,598.28/120,987.20
  6. Step 6: Final answer
    x = 86,622.55

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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.