Home / 87,190.20-120,359.10-73,830.72

Finding the Fourth Proportional to 87,190.20, 120,359.10 and 73,830.72

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Solution

The fourth proportional to 87,190.20, 120,359.10 and 73,830.72 is: 101,917.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,190.20 : 120,359.10 = 73,830.72 : x
  2. Step 2: Convert to fraction form
    87,190.20/120,359.10 = 73,830.72/x
  3. Step 3: Cross multiply
    87,190.20x = 120,359.10 × 73,830.72
  4. Step 4: Simplify right side
    87,190.20x = 8,886,199,011.55
  5. Step 5: Solve for x
    x = 8,886,199,011.55/87,190.20
  6. Step 6: Final answer
    x = 101,917.41

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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.