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Finding the Fourth Proportional to 143,369.82, 214,763.13 and 72,248.58

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Solution

The fourth proportional to 143,369.82, 214,763.13 and 72,248.58 is: 108,225.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,369.82 : 214,763.13 = 72,248.58 : x
  2. Step 2: Convert to fraction form
    143,369.82/214,763.13 = 72,248.58/x
  3. Step 3: Cross multiply
    143,369.82x = 214,763.13 × 72,248.58
  4. Step 4: Simplify right side
    143,369.82x = 15,516,331,178.86
  5. Step 5: Solve for x
    x = 15,516,331,178.86/143,369.82
  6. Step 6: Final answer
    x = 108,225.92

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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.