Home / 142,772.41-197,027.09-79,111.27

Finding the Fourth Proportional to 142,772.41, 197,027.09 and 79,111.27

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Solution

The fourth proportional to 142,772.41, 197,027.09 and 79,111.27 is: 109,174.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,772.41 : 197,027.09 = 79,111.27 : x
  2. Step 2: Convert to fraction form
    142,772.41/197,027.09 = 79,111.27/x
  3. Step 3: Cross multiply
    142,772.41x = 197,027.09 × 79,111.27
  4. Step 4: Simplify right side
    142,772.41x = 15,587,062,722.85
  5. Step 5: Solve for x
    x = 15,587,062,722.85/142,772.41
  6. Step 6: Final answer
    x = 109,174.20

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1.5x scale

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.