Home / 102,320.78-153,480.92-39,147.12

Finding the Fourth Proportional to 102,320.78, 153,480.92 and 39,147.12

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Solution

The fourth proportional to 102,320.78, 153,480.92 and 39,147.12 is: 58,720.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,320.78 : 153,480.92 = 39,147.12 : x
  2. Step 2: Convert to fraction form
    102,320.78/153,480.92 = 39,147.12/x
  3. Step 3: Cross multiply
    102,320.78x = 153,480.92 × 39,147.12
  4. Step 4: Simplify right side
    102,320.78x = 6,008,335,797.21
  5. Step 5: Solve for x
    x = 6,008,335,797.21/102,320.78
  6. Step 6: Final answer
    x = 58,720.59

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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.