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Finding the Fourth Proportional to 117,479.85, 162,122.43 and 69,742.77

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Solution

The fourth proportional to 117,479.85, 162,122.43 and 69,742.77 is: 96,245.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,479.85 : 162,122.43 = 69,742.77 : x
  2. Step 2: Convert to fraction form
    117,479.85/162,122.43 = 69,742.77/x
  3. Step 3: Cross multiply
    117,479.85x = 162,122.43 × 69,742.77
  4. Step 4: Simplify right side
    117,479.85x = 11,306,867,347.33
  5. Step 5: Solve for x
    x = 11,306,867,347.33/117,479.85
  6. Step 6: Final answer
    x = 96,245.16

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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.