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Finding the Fourth Proportional to 143,672.64, 215,607.28 and 50,178.40

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Solution

The fourth proportional to 143,672.64, 215,607.28 and 50,178.40 is: 75,301.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,672.64 : 215,607.28 = 50,178.40 : x
  2. Step 2: Convert to fraction form
    143,672.64/215,607.28 = 50,178.40/x
  3. Step 3: Cross multiply
    143,672.64x = 215,607.28 × 50,178.40
  4. Step 4: Simplify right side
    143,672.64x = 10,818,828,338.75
  5. Step 5: Solve for x
    x = 10,818,828,338.75/143,672.64
  6. Step 6: Final answer
    x = 75,301.94

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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.