Home / 209,125.38-313,511.68-90,707.52

Finding the Fourth Proportional to 209,125.38, 313,511.68 and 90,707.52

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Solution

The fourth proportional to 209,125.38, 313,511.68 and 90,707.52 is: 135,984.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,125.38 : 313,511.68 = 90,707.52 : x
  2. Step 2: Convert to fraction form
    209,125.38/313,511.68 = 90,707.52/x
  3. Step 3: Cross multiply
    209,125.38x = 313,511.68 × 90,707.52
  4. Step 4: Simplify right side
    209,125.38x = 28,437,866,983.83
  5. Step 5: Solve for x
    x = 28,437,866,983.83/209,125.38
  6. Step 6: Final answer
    x = 135,984.77

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1.5x scale

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.