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Finding the Fourth Proportional to 89,662.60, 134,493.90 and 72,166.60

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Solution

The fourth proportional to 89,662.60, 134,493.90 and 72,166.60 is: 108,249.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,662.60 : 134,493.90 = 72,166.60 : x
  2. Step 2: Convert to fraction form
    89,662.60/134,493.90 = 72,166.60/x
  3. Step 3: Cross multiply
    89,662.60x = 134,493.90 × 72,166.60
  4. Step 4: Simplify right side
    89,662.60x = 9,705,967,483.74
  5. Step 5: Solve for x
    x = 9,705,967,483.74/89,662.60
  6. Step 6: Final answer
    x = 108,249.90

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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.