Home / 155,979.03-215,251.05-84,359.05

Finding the Fourth Proportional to 155,979.03, 215,251.05 and 84,359.05

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Solution

The fourth proportional to 155,979.03, 215,251.05 and 84,359.05 is: 116,415.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,979.03 : 215,251.05 = 84,359.05 : x
  2. Step 2: Convert to fraction form
    155,979.03/215,251.05 = 84,359.05/x
  3. Step 3: Cross multiply
    155,979.03x = 215,251.05 × 84,359.05
  4. Step 4: Simplify right side
    155,979.03x = 18,158,373,013.25
  5. Step 5: Solve for x
    x = 18,158,373,013.25/155,979.03
  6. Step 6: Final answer
    x = 116,415.48

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1.5x scale

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.