Home / 207,597,809.80-311,184,138.30-121,291,791.40

Finding the Fourth Proportional to 207,597,809.80, 311,184,138.30 and 121,291,791.40

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Solution

The fourth proportional to 207,597,809.80, 311,184,138.30 and 121,291,791.40 is: 181,813,486.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,597,809.80 : 311,184,138.30 = 121,291,791.40 : x
  2. Step 2: Convert to fraction form
    207,597,809.80/311,184,138.30 = 121,291,791.40/x
  3. Step 3: Cross multiply
    207,597,809.80x = 311,184,138.30 × 121,291,791.40
  4. Step 4: Simplify right side
    207,597,809.80x = 37,744,081,589,672,352
  5. Step 5: Solve for x
    x = 37,744,081,589,672,352/207,597,809.80
  6. Step 6: Final answer
    x = 181,813,486.50

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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.