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Finding the Fourth Proportional to 143,717.60, 215,576.40 and 137,266.40

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Solution

The fourth proportional to 143,717.60, 215,576.40 and 137,266.40 is: 205,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,717.60 : 215,576.40 = 137,266.40 : x
  2. Step 2: Convert to fraction form
    143,717.60/215,576.40 = 137,266.40/x
  3. Step 3: Cross multiply
    143,717.60x = 215,576.40 × 137,266.40
  4. Step 4: Simplify right side
    143,717.60x = 29,591,396,352.96
  5. Step 5: Solve for x
    x = 29,591,396,352.96/143,717.60
  6. Step 6: Final answer
    x = 205,899.60

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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.