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Finding the Fourth Proportional to 159,699.20, 239,548.80 and 80,967.20

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Solution

The fourth proportional to 159,699.20, 239,548.80 and 80,967.20 is: 121,450.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,699.20 : 239,548.80 = 80,967.20 : x
  2. Step 2: Convert to fraction form
    159,699.20/239,548.80 = 80,967.20/x
  3. Step 3: Cross multiply
    159,699.20x = 239,548.80 × 80,967.20
  4. Step 4: Simplify right side
    159,699.20x = 19,395,595,599.36
  5. Step 5: Solve for x
    x = 19,395,595,599.36/159,699.20
  6. Step 6: Final answer
    x = 121,450.80

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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.