Home / 155,979.50-215,251.83-84,359.43

Finding the Fourth Proportional to 155,979.50, 215,251.83 and 84,359.43

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Solution

The fourth proportional to 155,979.50, 215,251.83 and 84,359.43 is: 116,416.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,979.50 : 215,251.83 = 84,359.43 : x
  2. Step 2: Convert to fraction form
    155,979.50/215,251.83 = 84,359.43/x
  3. Step 3: Cross multiply
    155,979.50x = 215,251.83 × 84,359.43
  4. Step 4: Simplify right side
    155,979.50x = 18,158,521,685.26
  5. Step 5: Solve for x
    x = 18,158,521,685.26/155,979.50
  6. Step 6: Final answer
    x = 116,416.08

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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.