Home / 122,690.72-169,298.45-68,229.25

Finding the Fourth Proportional to 122,690.72, 169,298.45 and 68,229.25

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Solution

The fourth proportional to 122,690.72, 169,298.45 and 68,229.25 is: 94,148.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,690.72 : 169,298.45 = 68,229.25 : x
  2. Step 2: Convert to fraction form
    122,690.72/169,298.45 = 68,229.25/x
  3. Step 3: Cross multiply
    122,690.72x = 169,298.45 × 68,229.25
  4. Step 4: Simplify right side
    122,690.72x = 11,551,107,097.22
  5. Step 5: Solve for x
    x = 11,551,107,097.22/122,690.72
  6. Step 6: Final answer
    x = 94,148.18

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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.