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Finding the Fourth Proportional to 153,245.68, 229,673.85 and 68,915.77

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Solution

The fourth proportional to 153,245.68, 229,673.85 and 68,915.77 is: 103,286.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,245.68 : 229,673.85 = 68,915.77 : x
  2. Step 2: Convert to fraction form
    153,245.68/229,673.85 = 68,915.77/x
  3. Step 3: Cross multiply
    153,245.68x = 229,673.85 × 68,915.77
  4. Step 4: Simplify right side
    153,245.68x = 15,828,150,221.61
  5. Step 5: Solve for x
    x = 15,828,150,221.61/153,245.68
  6. Step 6: Final answer
    x = 103,286.11

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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.