Home / 209,050.92-288,609.96-137,638.52

Finding the Fourth Proportional to 209,050.92, 288,609.96 and 137,638.52

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Solution

The fourth proportional to 209,050.92, 288,609.96 and 137,638.52 is: 190,019.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,050.92 : 288,609.96 = 137,638.52 : x
  2. Step 2: Convert to fraction form
    209,050.92/288,609.96 = 137,638.52/x
  3. Step 3: Cross multiply
    209,050.92x = 288,609.96 × 137,638.52
  4. Step 4: Simplify right side
    209,050.92x = 39,723,847,751.66
  5. Step 5: Solve for x
    x = 39,723,847,751.66/209,050.92
  6. Step 6: Final answer
    x = 190,019.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.