Home / 209,958.20-314,937.30-125,977.40

Finding the Fourth Proportional to 209,958.20, 314,937.30 and 125,977.40

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Solution

The fourth proportional to 209,958.20, 314,937.30 and 125,977.40 is: 188,966.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,958.20 : 314,937.30 = 125,977.40 : x
  2. Step 2: Convert to fraction form
    209,958.20/314,937.30 = 125,977.40/x
  3. Step 3: Cross multiply
    209,958.20x = 314,937.30 × 125,977.40
  4. Step 4: Simplify right side
    209,958.20x = 39,674,982,217.02
  5. Step 5: Solve for x
    x = 39,674,982,217.02/209,958.20
  6. Step 6: Final answer
    x = 188,966.10

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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.