Home / 247,779.09-371,815.65-90,019.85

Finding the Fourth Proportional to 247,779.09, 371,815.65 and 90,019.85

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Solution

The fourth proportional to 247,779.09, 371,815.65 and 90,019.85 is: 135,083.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,779.09 : 371,815.65 = 90,019.85 : x
  2. Step 2: Convert to fraction form
    247,779.09/371,815.65 = 90,019.85/x
  3. Step 3: Cross multiply
    247,779.09x = 371,815.65 × 90,019.85
  4. Step 4: Simplify right side
    247,779.09x = 33,470,787,181.57
  5. Step 5: Solve for x
    x = 33,470,787,181.57/247,779.09
  6. Step 6: Final answer
    x = 135,083.18

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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.