Home / 142,918.50-197,213.36-82,508.63

Finding the Fourth Proportional to 142,918.50, 197,213.36 and 82,508.63

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Solution

The fourth proportional to 142,918.50, 197,213.36 and 82,508.63 is: 113,853.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,918.50 : 197,213.36 = 82,508.63 : x
  2. Step 2: Convert to fraction form
    142,918.50/197,213.36 = 82,508.63/x
  3. Step 3: Cross multiply
    142,918.50x = 197,213.36 × 82,508.63
  4. Step 4: Simplify right side
    142,918.50x = 16,271,804,231.79
  5. Step 5: Solve for x
    x = 16,271,804,231.79/142,918.50
  6. Step 6: Final answer
    x = 113,853.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.