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Finding the Fourth Proportional to 146,959.20, 220,438.80 and 105,487.20

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Solution

The fourth proportional to 146,959.20, 220,438.80 and 105,487.20 is: 158,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,959.20 : 220,438.80 = 105,487.20 : x
  2. Step 2: Convert to fraction form
    146,959.20/220,438.80 = 105,487.20/x
  3. Step 3: Cross multiply
    146,959.20x = 220,438.80 × 105,487.20
  4. Step 4: Simplify right side
    146,959.20x = 23,253,471,783.36
  5. Step 5: Solve for x
    x = 23,253,471,783.36/146,959.20
  6. Step 6: Final answer
    x = 158,230.80

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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.