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Finding the Fourth Proportional to 158,646.75, 238,042.76 and 68,716.96

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Solution

The fourth proportional to 158,646.75, 238,042.76 and 68,716.96 is: 103,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,646.75 : 238,042.76 = 68,716.96 : x
  2. Step 2: Convert to fraction form
    158,646.75/238,042.76 = 68,716.96/x
  3. Step 3: Cross multiply
    158,646.75x = 238,042.76 × 68,716.96
  4. Step 4: Simplify right side
    158,646.75x = 16,357,574,817.21
  5. Step 5: Solve for x
    x = 16,357,574,817.21/158,646.75
  6. Step 6: Final answer
    x = 103,106.90

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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.