Home / 97,844.76-135,104.49-78,663.15

Finding the Fourth Proportional to 97,844.76, 135,104.49 and 78,663.15

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Solution

The fourth proportional to 97,844.76, 135,104.49 and 78,663.15 is: 108,618.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,844.76 : 135,104.49 = 78,663.15 : x
  2. Step 2: Convert to fraction form
    97,844.76/135,104.49 = 78,663.15/x
  3. Step 3: Cross multiply
    97,844.76x = 135,104.49 × 78,663.15
  4. Step 4: Simplify right side
    97,844.76x = 10,627,744,762.54
  5. Step 5: Solve for x
    x = 10,627,744,762.54/97,844.76
  6. Step 6: Final answer
    x = 108,618.44

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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.