Home / 102,780.03-154,148.85-39,578.46

Finding the Fourth Proportional to 102,780.03, 154,148.85 and 39,578.46

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Solution

The fourth proportional to 102,780.03, 154,148.85 and 39,578.46 is: 59,359.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,780.03 : 154,148.85 = 39,578.46 : x
  2. Step 2: Convert to fraction form
    102,780.03/154,148.85 = 39,578.46/x
  3. Step 3: Cross multiply
    102,780.03x = 154,148.85 × 39,578.46
  4. Step 4: Simplify right side
    102,780.03x = 6,100,974,093.77
  5. Step 5: Solve for x
    x = 6,100,974,093.77/102,780.03
  6. Step 6: Final answer
    x = 59,359.53

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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.