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Finding the Fourth Proportional to 105,468.60, 158,121.90 and 52,915.80

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Solution

The fourth proportional to 105,468.60, 158,121.90 and 52,915.80 is: 79,333.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,468.60 : 158,121.90 = 52,915.80 : x
  2. Step 2: Convert to fraction form
    105,468.60/158,121.90 = 52,915.80/x
  3. Step 3: Cross multiply
    105,468.60x = 158,121.90 × 52,915.80
  4. Step 4: Simplify right side
    105,468.60x = 8,367,146,836.02
  5. Step 5: Solve for x
    x = 8,367,146,836.02/105,468.60
  6. Step 6: Final answer
    x = 79,333.06

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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.