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Finding the Fourth Proportional to 117,486.75, 162,265.38 and 79,695.39

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Solution

The fourth proportional to 117,486.75, 162,265.38 and 79,695.39 is: 110,070.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,486.75 : 162,265.38 = 79,695.39 : x
  2. Step 2: Convert to fraction form
    117,486.75/162,265.38 = 79,695.39/x
  3. Step 3: Cross multiply
    117,486.75x = 162,265.38 × 79,695.39
  4. Step 4: Simplify right side
    117,486.75x = 12,931,802,742.60
  5. Step 5: Solve for x
    x = 12,931,802,742.60/117,486.75
  6. Step 6: Final answer
    x = 110,070.31

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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.