Home / 120,489.12-180,732.29-49,395.87

Finding the Fourth Proportional to 120,489.12, 180,732.29 and 49,395.87

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Solution

The fourth proportional to 120,489.12, 180,732.29 and 49,395.87 is: 74,093.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,489.12 : 180,732.29 = 49,395.87 : x
  2. Step 2: Convert to fraction form
    120,489.12/180,732.29 = 49,395.87/x
  3. Step 3: Cross multiply
    120,489.12x = 180,732.29 × 49,395.87
  4. Step 4: Simplify right side
    120,489.12x = 8,927,428,701.64
  5. Step 5: Solve for x
    x = 8,927,428,701.64/120,489.12
  6. Step 6: Final answer
    x = 74,093.24

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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.