Home / 209,966.20-314,949.30-125,985.40

Finding the Fourth Proportional to 209,966.20, 314,949.30 and 125,985.40

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Solution

The fourth proportional to 209,966.20, 314,949.30 and 125,985.40 is: 188,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,966.20 : 314,949.30 = 125,985.40 : x
  2. Step 2: Convert to fraction form
    209,966.20/314,949.30 = 125,985.40/x
  3. Step 3: Cross multiply
    209,966.20x = 314,949.30 × 125,985.40
  4. Step 4: Simplify right side
    209,966.20x = 39,679,013,540.22
  5. Step 5: Solve for x
    x = 39,679,013,540.22/209,966.20
  6. Step 6: Final answer
    x = 188,978.10

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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.