Home / 209,281.20-313,914.86-90,952.68

Finding the Fourth Proportional to 209,281.20, 313,914.86 and 90,952.68

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Solution

The fourth proportional to 209,281.20, 313,914.86 and 90,952.68 is: 136,426.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,281.20 : 313,914.86 = 90,952.68 : x
  2. Step 2: Convert to fraction form
    209,281.20/313,914.86 = 90,952.68/x
  3. Step 3: Cross multiply
    209,281.20x = 313,914.86 × 90,952.68
  4. Step 4: Simplify right side
    209,281.20x = 28,551,397,808.82
  5. Step 5: Solve for x
    x = 28,551,397,808.82/209,281.20
  6. Step 6: Final answer
    x = 136,426.00

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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.