Home / 209,277.72-313,909.62-90,949.18

Finding the Fourth Proportional to 209,277.72, 313,909.62 and 90,949.18

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Solution

The fourth proportional to 209,277.72, 313,909.62 and 90,949.18 is: 136,420.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,277.72 : 313,909.62 = 90,949.18 : x
  2. Step 2: Convert to fraction form
    209,277.72/313,909.62 = 90,949.18/x
  3. Step 3: Cross multiply
    209,277.72x = 313,909.62 × 90,949.18
  4. Step 4: Simplify right side
    209,277.72x = 28,549,822,533.11
  5. Step 5: Solve for x
    x = 28,549,822,533.11/209,277.72
  6. Step 6: Final answer
    x = 136,420.75

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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.