Home / 112,778.55-169,167.72-105,305.16

Finding the Fourth Proportional to 112,778.55, 169,167.72 and 105,305.16

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Solution

The fourth proportional to 112,778.55, 169,167.72 and 105,305.16 is: 157,957.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,778.55 : 169,167.72 = 105,305.16 : x
  2. Step 2: Convert to fraction form
    112,778.55/169,167.72 = 105,305.16/x
  3. Step 3: Cross multiply
    112,778.55x = 169,167.72 × 105,305.16
  4. Step 4: Simplify right side
    112,778.55x = 17,814,233,821.44
  5. Step 5: Solve for x
    x = 17,814,233,821.44/112,778.55
  6. Step 6: Final answer
    x = 157,957.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.