Home / 155,040.20-213,952.75-87,057.71

Finding the Fourth Proportional to 155,040.20, 213,952.75 and 87,057.71

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Solution

The fourth proportional to 155,040.20, 213,952.75 and 87,057.71 is: 120,138.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,040.20 : 213,952.75 = 87,057.71 : x
  2. Step 2: Convert to fraction form
    155,040.20/213,952.75 = 87,057.71/x
  3. Step 3: Cross multiply
    155,040.20x = 213,952.75 × 87,057.71
  4. Step 4: Simplify right side
    155,040.20x = 18,626,236,463.20
  5. Step 5: Solve for x
    x = 18,626,236,463.20/155,040.20
  6. Step 6: Final answer
    x = 120,138.11

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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.