Home / 209,964.90-314,855-76,810.62

Finding the Fourth Proportional to 209,964.90, 314,855 and 76,810.62

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Solution

The fourth proportional to 209,964.90, 314,855 and 76,810.62 is: 115,182.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,964.90 : 314,855 = 76,810.62 : x
  2. Step 2: Convert to fraction form
    209,964.90/314,855 = 76,810.62/x
  3. Step 3: Cross multiply
    209,964.90x = 314,855 × 76,810.62
  4. Step 4: Simplify right side
    209,964.90x = 24,184,207,760.10
  5. Step 5: Solve for x
    x = 24,184,207,760.10/209,964.90
  6. Step 6: Final answer
    x = 115,182.15

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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.