Home / 209,337.20-313,908.60-90,947.60

Finding the Fourth Proportional to 209,337.20, 313,908.60 and 90,947.60

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Solution

The fourth proportional to 209,337.20, 313,908.60 and 90,947.60 is: 136,379.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,337.20 : 313,908.60 = 90,947.60 : x
  2. Step 2: Convert to fraction form
    209,337.20/313,908.60 = 90,947.60/x
  3. Step 3: Cross multiply
    209,337.20x = 313,908.60 × 90,947.60
  4. Step 4: Simplify right side
    209,337.20x = 28,549,233,789.36
  5. Step 5: Solve for x
    x = 28,549,233,789.36/209,337.20
  6. Step 6: Final answer
    x = 136,379.17

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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.