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Finding the Fourth Proportional to 159,541.10, 239,311.65 and 80,809.10

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Solution

The fourth proportional to 159,541.10, 239,311.65 and 80,809.10 is: 121,213.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,541.10 : 239,311.65 = 80,809.10 : x
  2. Step 2: Convert to fraction form
    159,541.10/239,311.65 = 80,809.10/x
  3. Step 3: Cross multiply
    159,541.10x = 239,311.65 × 80,809.10
  4. Step 4: Simplify right side
    159,541.10x = 19,338,559,056.02
  5. Step 5: Solve for x
    x = 19,338,559,056.02/159,541.10
  6. Step 6: Final answer
    x = 121,213.65

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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.