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Finding the Fourth Proportional to 131,591.60, 197,257.80 and 64,977.20

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Solution

The fourth proportional to 131,591.60, 197,257.80 and 64,977.20 is: 97,401.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,591.60 : 197,257.80 = 64,977.20 : x
  2. Step 2: Convert to fraction form
    131,591.60/197,257.80 = 64,977.20/x
  3. Step 3: Cross multiply
    131,591.60x = 197,257.80 × 64,977.20
  4. Step 4: Simplify right side
    131,591.60x = 12,817,259,522.16
  5. Step 5: Solve for x
    x = 12,817,259,522.16/131,591.60
  6. Step 6: Final answer
    x = 97,401.81

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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.