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Finding the Fourth Proportional to 131,364.60, 197,046.90 and 89,374.20

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Solution

The fourth proportional to 131,364.60, 197,046.90 and 89,374.20 is: 134,061.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,364.60 : 197,046.90 = 89,374.20 : x
  2. Step 2: Convert to fraction form
    131,364.60/197,046.90 = 89,374.20/x
  3. Step 3: Cross multiply
    131,364.60x = 197,046.90 × 89,374.20
  4. Step 4: Simplify right side
    131,364.60x = 17,610,909,049.98
  5. Step 5: Solve for x
    x = 17,610,909,049.98/131,364.60
  6. Step 6: Final answer
    x = 134,061.30

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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.