Home / 120,089.12-180,113.20-40,118.02

Finding the Fourth Proportional to 120,089.12, 180,113.20 and 40,118.02

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Solution

The fourth proportional to 120,089.12, 180,113.20 and 40,118.02 is: 60,170.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,089.12 : 180,113.20 = 40,118.02 : x
  2. Step 2: Convert to fraction form
    120,089.12/180,113.20 = 40,118.02/x
  3. Step 3: Cross multiply
    120,089.12x = 180,113.20 × 40,118.02
  4. Step 4: Simplify right side
    120,089.12x = 7,225,784,409.29
  5. Step 5: Solve for x
    x = 7,225,784,409.29/120,089.12
  6. Step 6: Final answer
    x = 60,170.19

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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.