Home / 155,979.53-215,251.74-84,359.55

Finding the Fourth Proportional to 155,979.53, 215,251.74 and 84,359.55

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Solution

The fourth proportional to 155,979.53, 215,251.74 and 84,359.55 is: 116,416.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,979.53 : 215,251.74 = 84,359.55 : x
  2. Step 2: Convert to fraction form
    155,979.53/215,251.74 = 84,359.55/x
  3. Step 3: Cross multiply
    155,979.53x = 215,251.74 × 84,359.55
  4. Step 4: Simplify right side
    155,979.53x = 18,158,538,846.86
  5. Step 5: Solve for x
    x = 18,158,538,846.86/155,979.53
  6. Step 6: Final answer
    x = 116,416.17

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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.