Home / 103,245.24-142,558.70-79,334.20

Finding the Fourth Proportional to 103,245.24, 142,558.70 and 79,334.20

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Solution

The fourth proportional to 103,245.24, 142,558.70 and 79,334.20 is: 109,542.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,245.24 : 142,558.70 = 79,334.20 : x
  2. Step 2: Convert to fraction form
    103,245.24/142,558.70 = 79,334.20/x
  3. Step 3: Cross multiply
    103,245.24x = 142,558.70 × 79,334.20
  4. Step 4: Simplify right side
    103,245.24x = 11,309,780,417.54
  5. Step 5: Solve for x
    x = 11,309,780,417.54/103,245.24
  6. Step 6: Final answer
    x = 109,542.87

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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.