Home / 142,942.62-214,331.92-54,139.49

Finding the Fourth Proportional to 142,942.62, 214,331.92 and 54,139.49

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Solution

The fourth proportional to 142,942.62, 214,331.92 and 54,139.49 is: 81,178.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,942.62 : 214,331.92 = 54,139.49 : x
  2. Step 2: Convert to fraction form
    142,942.62/214,331.92 = 54,139.49/x
  3. Step 3: Cross multiply
    142,942.62x = 214,331.92 × 54,139.49
  4. Step 4: Simplify right side
    142,942.62x = 11,603,820,740.79
  5. Step 5: Solve for x
    x = 11,603,820,740.79/142,942.62
  6. Step 6: Final answer
    x = 81,178.17

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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.