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Finding the Fourth Proportional to 142,754.40, 214,081.20 and 49,238.40

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Solution

The fourth proportional to 142,754.40, 214,081.20 and 49,238.40 is: 73,840.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,754.40 : 214,081.20 = 49,238.40 : x
  2. Step 2: Convert to fraction form
    142,754.40/214,081.20 = 49,238.40/x
  3. Step 3: Cross multiply
    142,754.40x = 214,081.20 × 49,238.40
  4. Step 4: Simplify right side
    142,754.40x = 10,541,015,758.08
  5. Step 5: Solve for x
    x = 10,541,015,758.08/142,754.40
  6. Step 6: Final answer
    x = 73,840.22

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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.