Home / 139,920.75-209,881.13-51,125.85

Finding the Fourth Proportional to 139,920.75, 209,881.13 and 51,125.85

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Solution

The fourth proportional to 139,920.75, 209,881.13 and 51,125.85 is: 76,688.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,920.75 : 209,881.13 = 51,125.85 : x
  2. Step 2: Convert to fraction form
    139,920.75/209,881.13 = 51,125.85/x
  3. Step 3: Cross multiply
    139,920.75x = 209,881.13 × 51,125.85
  4. Step 4: Simplify right side
    139,920.75x = 10,730,350,914.58
  5. Step 5: Solve for x
    x = 10,730,350,914.58/139,920.75
  6. Step 6: Final answer
    x = 76,688.78

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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.