Home / 247,400.07-371,160.54-78,920.39

Finding the Fourth Proportional to 247,400.07, 371,160.54 and 78,920.39

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Solution

The fourth proportional to 247,400.07, 371,160.54 and 78,920.39 is: 118,399.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,400.07 : 371,160.54 = 78,920.39 : x
  2. Step 2: Convert to fraction form
    247,400.07/371,160.54 = 78,920.39/x
  3. Step 3: Cross multiply
    247,400.07x = 371,160.54 × 78,920.39
  4. Step 4: Simplify right side
    247,400.07x = 29,292,132,713.61
  5. Step 5: Solve for x
    x = 29,292,132,713.61/247,400.07
  6. Step 6: Final answer
    x = 118,399.86

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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.