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Finding the Fourth Proportional to 143,691.93, 215,728.68 and 122,766.39

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Solution

The fourth proportional to 143,691.93, 215,728.68 and 122,766.39 is: 184,312.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,691.93 : 215,728.68 = 122,766.39 : x
  2. Step 2: Convert to fraction form
    143,691.93/215,728.68 = 122,766.39/x
  3. Step 3: Cross multiply
    143,691.93x = 215,728.68 × 122,766.39
  4. Step 4: Simplify right side
    143,691.93x = 26,484,231,263.07
  5. Step 5: Solve for x
    x = 26,484,231,263.07/143,691.93
  6. Step 6: Final answer
    x = 184,312.59

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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.