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Finding the Fourth Proportional to 143,148.52, 214,695.08 and 43,285.30

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Solution

The fourth proportional to 143,148.52, 214,695.08 and 43,285.30 is: 64,919.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,148.52 : 214,695.08 = 43,285.30 : x
  2. Step 2: Convert to fraction form
    143,148.52/214,695.08 = 43,285.30/x
  3. Step 3: Cross multiply
    143,148.52x = 214,695.08 × 43,285.30
  4. Step 4: Simplify right side
    143,148.52x = 9,293,140,729.90
  5. Step 5: Solve for x
    x = 9,293,140,729.90/143,148.52
  6. Step 6: Final answer
    x = 64,919.57

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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.