Home / 120,329,939.60-180,200,543.25-108,684,470.78

Finding the Fourth Proportional to 120,329,939.60, 180,200,543.25 and 108,684,470.78

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Solution

The fourth proportional to 120,329,939.60, 180,200,543.25 and 108,684,470.78 is: 162,760,828.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,329,939.60 : 180,200,543.25 = 108,684,470.78 : x
  2. Step 2: Convert to fraction form
    120,329,939.60/180,200,543.25 = 108,684,470.78/x
  3. Step 3: Cross multiply
    120,329,939.60x = 180,200,543.25 × 108,684,470.78
  4. Step 4: Simplify right side
    120,329,939.60x = 19,585,000,677,394,752
  5. Step 5: Solve for x
    x = 19,585,000,677,394,752/120,329,939.60
  6. Step 6: Final answer
    x = 162,760,828.62

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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.