Home / 120,502.12-180,711.57-49,404.58

Finding the Fourth Proportional to 120,502.12, 180,711.57 and 49,404.58

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Solution

The fourth proportional to 120,502.12, 180,711.57 and 49,404.58 is: 74,089.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,502.12 : 180,711.57 = 49,404.58 : x
  2. Step 2: Convert to fraction form
    120,502.12/180,711.57 = 49,404.58/x
  3. Step 3: Cross multiply
    120,502.12x = 180,711.57 × 49,404.58
  4. Step 4: Simplify right side
    120,502.12x = 8,927,979,216.99
  5. Step 5: Solve for x
    x = 8,927,979,216.99/120,502.12
  6. Step 6: Final answer
    x = 74,089.81

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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.