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Finding the Fourth Proportional to 143,585.11, 215,409.78 and 43,753.11

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Solution

The fourth proportional to 143,585.11, 215,409.78 and 43,753.11 is: 65,639.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,585.11 : 215,409.78 = 43,753.11 : x
  2. Step 2: Convert to fraction form
    143,585.11/215,409.78 = 43,753.11/x
  3. Step 3: Cross multiply
    143,585.11x = 215,409.78 × 43,753.11
  4. Step 4: Simplify right side
    143,585.11x = 9,424,848,203.31
  5. Step 5: Solve for x
    x = 9,424,848,203.31/143,585.11
  6. Step 6: Final answer
    x = 65,639.46

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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.