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Finding the Fourth Proportional to 143,015.41, 214,492.74 and 54,237.79

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Solution

The fourth proportional to 143,015.41, 214,492.74 and 54,237.79 is: 81,345.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,015.41 : 214,492.74 = 54,237.79 : x
  2. Step 2: Convert to fraction form
    143,015.41/214,492.74 = 54,237.79/x
  3. Step 3: Cross multiply
    143,015.41x = 214,492.74 × 54,237.79
  4. Step 4: Simplify right side
    143,015.41x = 11,633,612,188.64
  5. Step 5: Solve for x
    x = 11,633,612,188.64/143,015.41
  6. Step 6: Final answer
    x = 81,345.17

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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.