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Finding the Fourth Proportional to 143,688.44, 215,432.64 and 63,683

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Solution

The fourth proportional to 143,688.44, 215,432.64 and 63,683 is: 95,480.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,688.44 : 215,432.64 = 63,683 : x
  2. Step 2: Convert to fraction form
    143,688.44/215,432.64 = 63,683/x
  3. Step 3: Cross multiply
    143,688.44x = 215,432.64 × 63,683
  4. Step 4: Simplify right side
    143,688.44x = 13,719,396,813.12
  5. Step 5: Solve for x
    x = 13,719,396,813.12/143,688.44
  6. Step 6: Final answer
    x = 95,480.17

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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.