Home / 210,107.20-314,942.10-115,191.40

Finding the Fourth Proportional to 210,107.20, 314,942.10 and 115,191.40

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Solution

The fourth proportional to 210,107.20, 314,942.10 and 115,191.40 is: 172,667.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,107.20 : 314,942.10 = 115,191.40 : x
  2. Step 2: Convert to fraction form
    210,107.20/314,942.10 = 115,191.40/x
  3. Step 3: Cross multiply
    210,107.20x = 314,942.10 × 115,191.40
  4. Step 4: Simplify right side
    210,107.20x = 36,278,621,417.94
  5. Step 5: Solve for x
    x = 36,278,621,417.94/210,107.20
  6. Step 6: Final answer
    x = 172,667.20

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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.