Home / 122,638.23-169,287.01-71,667.56

Finding the Fourth Proportional to 122,638.23, 169,287.01 and 71,667.56

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Solution

The fourth proportional to 122,638.23, 169,287.01 and 71,667.56 is: 98,928.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,638.23 : 169,287.01 = 71,667.56 : x
  2. Step 2: Convert to fraction form
    122,638.23/169,287.01 = 71,667.56/x
  3. Step 3: Cross multiply
    122,638.23x = 169,287.01 × 71,667.56
  4. Step 4: Simplify right side
    122,638.23x = 12,132,387,190.44
  5. Step 5: Solve for x
    x = 12,132,387,190.44/122,638.23
  6. Step 6: Final answer
    x = 98,928.26

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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.