Home / 98,919.36-136,456.16-75,006.56

Finding the Fourth Proportional to 98,919.36, 136,456.16 and 75,006.56

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Solution

The fourth proportional to 98,919.36, 136,456.16 and 75,006.56 is: 103,469.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,919.36 : 136,456.16 = 75,006.56 : x
  2. Step 2: Convert to fraction form
    98,919.36/136,456.16 = 75,006.56/x
  3. Step 3: Cross multiply
    98,919.36x = 136,456.16 × 75,006.56
  4. Step 4: Simplify right side
    98,919.36x = 10,235,107,152.41
  5. Step 5: Solve for x
    x = 10,235,107,152.41/98,919.36
  6. Step 6: Final answer
    x = 103,469.20

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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.