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Finding the Fourth Proportional to 131,844.60, 197,679.54 and 72,708.60

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Solution

The fourth proportional to 131,844.60, 197,679.54 and 72,708.60 is: 109,014.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,844.60 : 197,679.54 = 72,708.60 : x
  2. Step 2: Convert to fraction form
    131,844.60/197,679.54 = 72,708.60/x
  3. Step 3: Cross multiply
    131,844.60x = 197,679.54 × 72,708.60
  4. Step 4: Simplify right side
    131,844.60x = 14,373,002,602.04
  5. Step 5: Solve for x
    x = 14,373,002,602.04/131,844.60
  6. Step 6: Final answer
    x = 109,014.72

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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.