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Finding the Fourth Proportional to 133,311.60, 199,967.40 and 88,405.20

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Solution

The fourth proportional to 133,311.60, 199,967.40 and 88,405.20 is: 132,607.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,311.60 : 199,967.40 = 88,405.20 : x
  2. Step 2: Convert to fraction form
    133,311.60/199,967.40 = 88,405.20/x
  3. Step 3: Cross multiply
    133,311.60x = 199,967.40 × 88,405.20
  4. Step 4: Simplify right side
    133,311.60x = 17,678,157,990.48
  5. Step 5: Solve for x
    x = 17,678,157,990.48/133,311.60
  6. Step 6: Final answer
    x = 132,607.80

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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.