Home / 102,780.53-154,149.60-39,578.96

Finding the Fourth Proportional to 102,780.53, 154,149.60 and 39,578.96

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Solution

The fourth proportional to 102,780.53, 154,149.60 and 39,578.96 is: 59,360.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,780.53 : 154,149.60 = 39,578.96 : x
  2. Step 2: Convert to fraction form
    102,780.53/154,149.60 = 39,578.96/x
  3. Step 3: Cross multiply
    102,780.53x = 154,149.60 × 39,578.96
  4. Step 4: Simplify right side
    102,780.53x = 6,101,080,081.67
  5. Step 5: Solve for x
    x = 6,101,080,081.67/102,780.53
  6. Step 6: Final answer
    x = 59,360.27

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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.