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Finding the Fourth Proportional to 160,608.20, 240,912.30 and 85,958.60

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Solution

The fourth proportional to 160,608.20, 240,912.30 and 85,958.60 is: 128,937.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,608.20 : 240,912.30 = 85,958.60 : x
  2. Step 2: Convert to fraction form
    160,608.20/240,912.30 = 85,958.60/x
  3. Step 3: Cross multiply
    160,608.20x = 240,912.30 × 85,958.60
  4. Step 4: Simplify right side
    160,608.20x = 20,708,484,030.78
  5. Step 5: Solve for x
    x = 20,708,484,030.78/160,608.20
  6. Step 6: Final answer
    x = 128,937.90

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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.