Home / 209,117.60-313,500.07-90,699.75

Finding the Fourth Proportional to 209,117.60, 313,500.07 and 90,699.75

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Solution

The fourth proportional to 209,117.60, 313,500.07 and 90,699.75 is: 135,973.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,117.60 : 313,500.07 = 90,699.75 : x
  2. Step 2: Convert to fraction form
    209,117.60/313,500.07 = 90,699.75/x
  3. Step 3: Cross multiply
    209,117.60x = 313,500.07 × 90,699.75
  4. Step 4: Simplify right side
    209,117.60x = 28,434,377,973.98
  5. Step 5: Solve for x
    x = 28,434,377,973.98/209,117.60
  6. Step 6: Final answer
    x = 135,973.15

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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.