Home / 122,722.08-169,353.55-80,279.70

Finding the Fourth Proportional to 122,722.08, 169,353.55 and 80,279.70

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Solution

The fourth proportional to 122,722.08, 169,353.55 and 80,279.70 is: 110,784.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,722.08 : 169,353.55 = 80,279.70 : x
  2. Step 2: Convert to fraction form
    122,722.08/169,353.55 = 80,279.70/x
  3. Step 3: Cross multiply
    122,722.08x = 169,353.55 × 80,279.70
  4. Step 4: Simplify right side
    122,722.08x = 13,595,652,187.94
  5. Step 5: Solve for x
    x = 13,595,652,187.94/122,722.08
  6. Step 6: Final answer
    x = 110,784.08

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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.