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Finding the Fourth Proportional to 143,694.08, 215,541.12 and 43,854.80

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Solution

The fourth proportional to 143,694.08, 215,541.12 and 43,854.80 is: 65,782.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,694.08 : 215,541.12 = 43,854.80 : x
  2. Step 2: Convert to fraction form
    143,694.08/215,541.12 = 43,854.80/x
  3. Step 3: Cross multiply
    143,694.08x = 215,541.12 × 43,854.80
  4. Step 4: Simplify right side
    143,694.08x = 9,452,512,709.38
  5. Step 5: Solve for x
    x = 9,452,512,709.38/143,694.08
  6. Step 6: Final answer
    x = 65,782.20

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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.