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Finding the Fourth Proportional to 92,111.16, 138,169.08 and 68,885.04

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Solution

The fourth proportional to 92,111.16, 138,169.08 and 68,885.04 is: 103,329.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,111.16 : 138,169.08 = 68,885.04 : x
  2. Step 2: Convert to fraction form
    92,111.16/138,169.08 = 68,885.04/x
  3. Step 3: Cross multiply
    92,111.16x = 138,169.08 × 68,885.04
  4. Step 4: Simplify right side
    92,111.16x = 9,517,782,602.56
  5. Step 5: Solve for x
    x = 9,517,782,602.56/92,111.16
  6. Step 6: Final answer
    x = 103,329.31

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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.