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Finding the Fourth Proportional to 89,960.60, 134,940.90 and 88,648.40

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Solution

The fourth proportional to 89,960.60, 134,940.90 and 88,648.40 is: 132,972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,960.60 : 134,940.90 = 88,648.40 : x
  2. Step 2: Convert to fraction form
    89,960.60/134,940.90 = 88,648.40/x
  3. Step 3: Cross multiply
    89,960.60x = 134,940.90 × 88,648.40
  4. Step 4: Simplify right side
    89,960.60x = 11,962,294,879.56
  5. Step 5: Solve for x
    x = 11,962,294,879.56/89,960.60
  6. Step 6: Final answer
    x = 132,972.60

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1.5x scale

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.