Home / 101,081.20-151,403.10-54,279.40

Finding the Fourth Proportional to 101,081.20, 151,403.10 and 54,279.40

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Solution

The fourth proportional to 101,081.20, 151,403.10 and 54,279.40 is: 81,301.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,081.20 : 151,403.10 = 54,279.40 : x
  2. Step 2: Convert to fraction form
    101,081.20/151,403.10 = 54,279.40/x
  3. Step 3: Cross multiply
    101,081.20x = 151,403.10 × 54,279.40
  4. Step 4: Simplify right side
    101,081.20x = 8,218,069,426.14
  5. Step 5: Solve for x
    x = 8,218,069,426.14/101,081.20
  6. Step 6: Final answer
    x = 81,301.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.