Home / 142,899.37-197,211.05-79,243.09

Finding the Fourth Proportional to 142,899.37, 197,211.05 and 79,243.09

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Solution

The fourth proportional to 142,899.37, 197,211.05 and 79,243.09 is: 109,360.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,899.37 : 197,211.05 = 79,243.09 : x
  2. Step 2: Convert to fraction form
    142,899.37/197,211.05 = 79,243.09/x
  3. Step 3: Cross multiply
    142,899.37x = 197,211.05 × 79,243.09
  4. Step 4: Simplify right side
    142,899.37x = 15,627,612,587.93
  5. Step 5: Solve for x
    x = 15,627,612,587.93/142,899.37
  6. Step 6: Final answer
    x = 109,360.96

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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.