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Finding the Fourth Proportional to 135,957.28, 203,935.92 and 52,870.72

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Solution

The fourth proportional to 135,957.28, 203,935.92 and 52,870.72 is: 79,306.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,957.28 : 203,935.92 = 52,870.72 : x
  2. Step 2: Convert to fraction form
    135,957.28/203,935.92 = 52,870.72/x
  3. Step 3: Cross multiply
    135,957.28x = 203,935.92 × 52,870.72
  4. Step 4: Simplify right side
    135,957.28x = 10,782,238,924.26
  5. Step 5: Solve for x
    x = 10,782,238,924.26/135,957.28
  6. Step 6: Final answer
    x = 79,306.08

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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.