Home / 87,396.25-120,559.53-72,199.03

Finding the Fourth Proportional to 87,396.25, 120,559.53 and 72,199.03

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Solution

The fourth proportional to 87,396.25, 120,559.53 and 72,199.03 is: 99,595.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,396.25 : 120,559.53 = 72,199.03 : x
  2. Step 2: Convert to fraction form
    87,396.25/120,559.53 = 72,199.03/x
  3. Step 3: Cross multiply
    87,396.25x = 120,559.53 × 72,199.03
  4. Step 4: Simplify right side
    87,396.25x = 8,704,281,123.26
  5. Step 5: Solve for x
    x = 8,704,281,123.26/87,396.25
  6. Step 6: Final answer
    x = 99,595.59

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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.