Home / 122,805.28-169,458.48-69,085.72

Finding the Fourth Proportional to 122,805.28, 169,458.48 and 69,085.72

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Solution

The fourth proportional to 122,805.28, 169,458.48 and 69,085.72 is: 95,331.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,805.28 : 169,458.48 = 69,085.72 : x
  2. Step 2: Convert to fraction form
    122,805.28/169,458.48 = 69,085.72/x
  3. Step 3: Cross multiply
    122,805.28x = 169,458.48 × 69,085.72
  4. Step 4: Simplify right side
    122,805.28x = 11,707,161,100.91
  5. Step 5: Solve for x
    x = 11,707,161,100.91/122,805.28
  6. Step 6: Final answer
    x = 95,331.09

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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.