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Finding the Fourth Proportional to 143,887.68, 215,794.70 and 42,662.06

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Solution

The fourth proportional to 143,887.68, 215,794.70 and 42,662.06 is: 63,982.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,887.68 : 215,794.70 = 42,662.06 : x
  2. Step 2: Convert to fraction form
    143,887.68/215,794.70 = 42,662.06/x
  3. Step 3: Cross multiply
    143,887.68x = 215,794.70 × 42,662.06
  4. Step 4: Simplify right side
    143,887.68x = 9,206,246,439.08
  5. Step 5: Solve for x
    x = 9,206,246,439.08/143,887.68
  6. Step 6: Final answer
    x = 63,982.17

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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.