Home / 142,919.76-197,220.24-79,257.60

Finding the Fourth Proportional to 142,919.76, 197,220.24 and 79,257.60

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Solution

The fourth proportional to 142,919.76, 197,220.24 and 79,257.60 is: 109,370.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,919.76 : 197,220.24 = 79,257.60 : x
  2. Step 2: Convert to fraction form
    142,919.76/197,220.24 = 79,257.60/x
  3. Step 3: Cross multiply
    142,919.76x = 197,220.24 × 79,257.60
  4. Step 4: Simplify right side
    142,919.76x = 15,631,202,893.82
  5. Step 5: Solve for x
    x = 15,631,202,893.82/142,919.76
  6. Step 6: Final answer
    x = 109,370.48

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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.