Home / 121,877.26-182,816.46-31,919.78

Finding the Fourth Proportional to 121,877.26, 182,816.46 and 31,919.78

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Solution

The fourth proportional to 121,877.26, 182,816.46 and 31,919.78 is: 47,879.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,877.26 : 182,816.46 = 31,919.78 : x
  2. Step 2: Convert to fraction form
    121,877.26/182,816.46 = 31,919.78/x
  3. Step 3: Cross multiply
    121,877.26x = 182,816.46 × 31,919.78
  4. Step 4: Simplify right side
    121,877.26x = 5,835,461,640.62
  5. Step 5: Solve for x
    x = 5,835,461,640.62/121,877.26
  6. Step 6: Final answer
    x = 47,879.82

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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.