Home / 120,288.60-180,383.22-45,396

Finding the Fourth Proportional to 120,288.60, 180,383.22 and 45,396

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Solution

The fourth proportional to 120,288.60, 180,383.22 and 45,396 is: 68,075.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,288.60 : 180,383.22 = 45,396 : x
  2. Step 2: Convert to fraction form
    120,288.60/180,383.22 = 45,396/x
  3. Step 3: Cross multiply
    120,288.60x = 180,383.22 × 45,396
  4. Step 4: Simplify right side
    120,288.60x = 8,188,676,655.12
  5. Step 5: Solve for x
    x = 8,188,676,655.12/120,288.60
  6. Step 6: Final answer
    x = 68,075.25

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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.