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Finding the Fourth Proportional to 109,961.64, 151,701.66 and 74,162.88

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Solution

The fourth proportional to 109,961.64, 151,701.66 and 74,162.88 is: 102,314.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,961.64 : 151,701.66 = 74,162.88 : x
  2. Step 2: Convert to fraction form
    109,961.64/151,701.66 = 74,162.88/x
  3. Step 3: Cross multiply
    109,961.64x = 151,701.66 × 74,162.88
  4. Step 4: Simplify right side
    109,961.64x = 11,250,632,006.38
  5. Step 5: Solve for x
    x = 11,250,632,006.38/109,961.64
  6. Step 6: Final answer
    x = 102,314.15

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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.