Home / 144,964.20-217,446.30-85,769.40

Finding the Fourth Proportional to 144,964.20, 217,446.30 and 85,769.40

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Solution

The fourth proportional to 144,964.20, 217,446.30 and 85,769.40 is: 128,654.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,964.20 : 217,446.30 = 85,769.40 : x
  2. Step 2: Convert to fraction form
    144,964.20/217,446.30 = 85,769.40/x
  3. Step 3: Cross multiply
    144,964.20x = 217,446.30 × 85,769.40
  4. Step 4: Simplify right side
    144,964.20x = 18,650,238,683.22
  5. Step 5: Solve for x
    x = 18,650,238,683.22/144,964.20
  6. Step 6: Final answer
    x = 128,654.10

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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.