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Finding the Fourth Proportional to 148,768.40, 223,152.60 and 89,719.40

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Solution

The fourth proportional to 148,768.40, 223,152.60 and 89,719.40 is: 134,579.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,768.40 : 223,152.60 = 89,719.40 : x
  2. Step 2: Convert to fraction form
    148,768.40/223,152.60 = 89,719.40/x
  3. Step 3: Cross multiply
    148,768.40x = 223,152.60 × 89,719.40
  4. Step 4: Simplify right side
    148,768.40x = 20,021,117,380.44
  5. Step 5: Solve for x
    x = 20,021,117,380.44/148,768.40
  6. Step 6: Final answer
    x = 134,579.10

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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.