Home / 102,911.20-142,011.12-57,581.44

Finding the Fourth Proportional to 102,911.20, 142,011.12 and 57,581.44

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Solution

The fourth proportional to 102,911.20, 142,011.12 and 57,581.44 is: 79,458.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,911.20 : 142,011.12 = 57,581.44 : x
  2. Step 2: Convert to fraction form
    102,911.20/142,011.12 = 57,581.44/x
  3. Step 3: Cross multiply
    102,911.20x = 142,011.12 × 57,581.44
  4. Step 4: Simplify right side
    102,911.20x = 8,177,204,785.61
  5. Step 5: Solve for x
    x = 8,177,204,785.61/102,911.20
  6. Step 6: Final answer
    x = 79,458.84

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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.