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Finding the Fourth Proportional to 143,503.68, 215,256 and 49,944

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Solution

The fourth proportional to 143,503.68, 215,256 and 49,944 is: 74,916.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,503.68 : 215,256 = 49,944 : x
  2. Step 2: Convert to fraction form
    143,503.68/215,256 = 49,944/x
  3. Step 3: Cross multiply
    143,503.68x = 215,256 × 49,944
  4. Step 4: Simplify right side
    143,503.68x = 10,750,745,664
  5. Step 5: Solve for x
    x = 10,750,745,664/143,503.68
  6. Step 6: Final answer
    x = 74,916.17

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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.