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Finding the Fourth Proportional to 146,017.40, 218,982.90 and 57,219.80

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Solution

The fourth proportional to 146,017.40, 218,982.90 and 57,219.80 is: 85,812.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,017.40 : 218,982.90 = 57,219.80 : x
  2. Step 2: Convert to fraction form
    146,017.40/218,982.90 = 57,219.80/x
  3. Step 3: Cross multiply
    146,017.40x = 218,982.90 × 57,219.80
  4. Step 4: Simplify right side
    146,017.40x = 12,530,157,741.42
  5. Step 5: Solve for x
    x = 12,530,157,741.42/146,017.40
  6. Step 6: Final answer
    x = 85,812.77

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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.