Home / 102,859.62-141,959.40-57,540.12

Finding the Fourth Proportional to 102,859.62, 141,959.40 and 57,540.12

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Solution

The fourth proportional to 102,859.62, 141,959.40 and 57,540.12 is: 79,412.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,859.62 : 141,959.40 = 57,540.12 : x
  2. Step 2: Convert to fraction form
    102,859.62/141,959.40 = 57,540.12/x
  3. Step 3: Cross multiply
    102,859.62x = 141,959.40 × 57,540.12
  4. Step 4: Simplify right side
    102,859.62x = 8,168,360,911.13
  5. Step 5: Solve for x
    x = 8,168,360,911.13/102,859.62
  6. Step 6: Final answer
    x = 79,412.71

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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.