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Finding the Fourth Proportional to 115,449.50, 159,346.86 and 67,718.22

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Solution

The fourth proportional to 115,449.50, 159,346.86 and 67,718.22 is: 93,466.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,449.50 : 159,346.86 = 67,718.22 : x
  2. Step 2: Convert to fraction form
    115,449.50/159,346.86 = 67,718.22/x
  3. Step 3: Cross multiply
    115,449.50x = 159,346.86 × 67,718.22
  4. Step 4: Simplify right side
    115,449.50x = 10,790,685,721.79
  5. Step 5: Solve for x
    x = 10,790,685,721.79/115,449.50
  6. Step 6: Final answer
    x = 93,466.72

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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.