Home / 88,910.20-122,740.69-68,721.45

Finding the Fourth Proportional to 88,910.20, 122,740.69 and 68,721.45

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Solution

The fourth proportional to 88,910.20, 122,740.69 and 68,721.45 is: 94,870.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,910.20 : 122,740.69 = 68,721.45 : x
  2. Step 2: Convert to fraction form
    88,910.20/122,740.69 = 68,721.45/x
  3. Step 3: Cross multiply
    88,910.20x = 122,740.69 × 68,721.45
  4. Step 4: Simplify right side
    88,910.20x = 8,434,918,190.80
  5. Step 5: Solve for x
    x = 8,434,918,190.80/88,910.20
  6. Step 6: Final answer
    x = 94,870.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.