Home / 122,638.44-169,287.28-71,667.72

Finding the Fourth Proportional to 122,638.44, 169,287.28 and 71,667.72

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Solution

The fourth proportional to 122,638.44, 169,287.28 and 71,667.72 is: 98,928.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,638.44 : 169,287.28 = 71,667.72 : x
  2. Step 2: Convert to fraction form
    122,638.44/169,287.28 = 71,667.72/x
  3. Step 3: Cross multiply
    122,638.44x = 169,287.28 × 71,667.72
  4. Step 4: Simplify right side
    122,638.44x = 12,132,433,382.60
  5. Step 5: Solve for x
    x = 12,132,433,382.60/122,638.44
  6. Step 6: Final answer
    x = 98,928.47

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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.