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Finding the Fourth Proportional to 120,575.19, 180,900.42 and 72,596.39

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Solution

The fourth proportional to 120,575.19, 180,900.42 and 72,596.39 is: 108,917.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,575.19 : 180,900.42 = 72,596.39 : x
  2. Step 2: Convert to fraction form
    120,575.19/180,900.42 = 72,596.39/x
  3. Step 3: Cross multiply
    120,575.19x = 180,900.42 × 72,596.39
  4. Step 4: Simplify right side
    120,575.19x = 13,132,716,536.98
  5. Step 5: Solve for x
    x = 13,132,716,536.98/120,575.19
  6. Step 6: Final answer
    x = 108,917.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.