Home / 120,606.32-180,781.80-40,568.09

Finding the Fourth Proportional to 120,606.32, 180,781.80 and 40,568.09

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Solution

The fourth proportional to 120,606.32, 180,781.80 and 40,568.09 is: 60,809.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,606.32 : 180,781.80 = 40,568.09 : x
  2. Step 2: Convert to fraction form
    120,606.32/180,781.80 = 40,568.09/x
  3. Step 3: Cross multiply
    120,606.32x = 180,781.80 × 40,568.09
  4. Step 4: Simplify right side
    120,606.32x = 7,333,971,428.85
  5. Step 5: Solve for x
    x = 7,333,971,428.85/120,606.32
  6. Step 6: Final answer
    x = 60,809.18

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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.