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Finding the Fourth Proportional to 146,574.20, 220,007.10 and 71,778.80

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Solution

The fourth proportional to 146,574.20, 220,007.10 and 71,778.80 is: 107,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,574.20 : 220,007.10 = 71,778.80 : x
  2. Step 2: Convert to fraction form
    146,574.20/220,007.10 = 71,778.80/x
  3. Step 3: Cross multiply
    146,574.20x = 220,007.10 × 71,778.80
  4. Step 4: Simplify right side
    146,574.20x = 15,791,845,629.48
  5. Step 5: Solve for x
    x = 15,791,845,629.48/146,574.20
  6. Step 6: Final answer
    x = 107,739.60

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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.