Home / 155,919.86-215,169.38-84,299.88

Finding the Fourth Proportional to 155,919.86, 215,169.38 and 84,299.88

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Solution

The fourth proportional to 155,919.86, 215,169.38 and 84,299.88 is: 116,333.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,919.86 : 215,169.38 = 84,299.88 : x
  2. Step 2: Convert to fraction form
    155,919.86/215,169.38 = 84,299.88/x
  3. Step 3: Cross multiply
    155,919.86x = 215,169.38 × 84,299.88
  4. Step 4: Simplify right side
    155,919.86x = 18,138,752,913.67
  5. Step 5: Solve for x
    x = 18,138,752,913.67/155,919.86
  6. Step 6: Final answer
    x = 116,333.82

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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.