Home / 98,603.12-136,134.68-75,899.43

Finding the Fourth Proportional to 98,603.12, 136,134.68 and 75,899.43

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Solution

The fourth proportional to 98,603.12, 136,134.68 and 75,899.43 is: 104,789.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,603.12 : 136,134.68 = 75,899.43 : x
  2. Step 2: Convert to fraction form
    98,603.12/136,134.68 = 75,899.43/x
  3. Step 3: Cross multiply
    98,603.12x = 136,134.68 × 75,899.43
  4. Step 4: Simplify right side
    98,603.12x = 10,332,544,235.74
  5. Step 5: Solve for x
    x = 10,332,544,235.74/98,603.12
  6. Step 6: Final answer
    x = 104,789.22

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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.