Home / 155,264.85-214,288.18-87,287.42

Finding the Fourth Proportional to 155,264.85, 214,288.18 and 87,287.42

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Solution

The fourth proportional to 155,264.85, 214,288.18 and 87,287.42 is: 120,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,264.85 : 214,288.18 = 87,287.42 : x
  2. Step 2: Convert to fraction form
    155,264.85/214,288.18 = 87,287.42/x
  3. Step 3: Cross multiply
    155,264.85x = 214,288.18 × 87,287.42
  4. Step 4: Simplify right side
    155,264.85x = 18,704,663,177.19
  5. Step 5: Solve for x
    x = 18,704,663,177.19/155,264.85
  6. Step 6: Final answer
    x = 120,469.40

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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.