Home / 210,125.20-314,969.10-115,209.40

Finding the Fourth Proportional to 210,125.20, 314,969.10 and 115,209.40

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Solution

The fourth proportional to 210,125.20, 314,969.10 and 115,209.40 is: 172,694.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,125.20 : 314,969.10 = 115,209.40 : x
  2. Step 2: Convert to fraction form
    210,125.20/314,969.10 = 115,209.40/x
  3. Step 3: Cross multiply
    210,125.20x = 314,969.10 × 115,209.40
  4. Step 4: Simplify right side
    210,125.20x = 36,287,401,029.54
  5. Step 5: Solve for x
    x = 36,287,401,029.54/210,125.20
  6. Step 6: Final answer
    x = 172,694.19

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1.5x scale

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.