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Finding the Fourth Proportional to 159,608.40, 239,412.60 and 103,621.20

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Solution

The fourth proportional to 159,608.40, 239,412.60 and 103,621.20 is: 155,431.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,608.40 : 239,412.60 = 103,621.20 : x
  2. Step 2: Convert to fraction form
    159,608.40/239,412.60 = 103,621.20/x
  3. Step 3: Cross multiply
    159,608.40x = 239,412.60 × 103,621.20
  4. Step 4: Simplify right side
    159,608.40x = 24,808,220,907.12
  5. Step 5: Solve for x
    x = 24,808,220,907.12/159,608.40
  6. Step 6: Final answer
    x = 155,431.80

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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.