Home / 120,987.12-181,517.60-61,864.32

Finding the Fourth Proportional to 120,987.12, 181,517.60 and 61,864.32

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Solution

The fourth proportional to 120,987.12, 181,517.60 and 61,864.32 is: 92,815.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,987.12 : 181,517.60 = 61,864.32 : x
  2. Step 2: Convert to fraction form
    120,987.12/181,517.60 = 61,864.32/x
  3. Step 3: Cross multiply
    120,987.12x = 181,517.60 × 61,864.32
  4. Step 4: Simplify right side
    120,987.12x = 11,229,462,892.03
  5. Step 5: Solve for x
    x = 11,229,462,892.03/120,987.12
  6. Step 6: Final answer
    x = 92,815.36

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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.