Home / 155,979.40-215,251.57-84,359.42

Finding the Fourth Proportional to 155,979.40, 215,251.57 and 84,359.42

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Solution

The fourth proportional to 155,979.40, 215,251.57 and 84,359.42 is: 116,416.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,979.40 : 215,251.57 = 84,359.42 : x
  2. Step 2: Convert to fraction form
    155,979.40/215,251.57 = 84,359.42/x
  3. Step 3: Cross multiply
    155,979.40x = 215,251.57 × 84,359.42
  4. Step 4: Simplify right side
    155,979.40x = 18,158,497,599.29
  5. Step 5: Solve for x
    x = 18,158,497,599.29/155,979.40
  6. Step 6: Final answer
    x = 116,416.00

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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.