Home / 209,456.15-314,145.20-67,303.89

Finding the Fourth Proportional to 209,456.15, 314,145.20 and 67,303.89

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Solution

The fourth proportional to 209,456.15, 314,145.20 and 67,303.89 is: 100,943.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,456.15 : 314,145.20 = 67,303.89 : x
  2. Step 2: Convert to fraction form
    209,456.15/314,145.20 = 67,303.89/x
  3. Step 3: Cross multiply
    209,456.15x = 314,145.20 × 67,303.89
  4. Step 4: Simplify right side
    209,456.15x = 21,143,193,984.83
  5. Step 5: Solve for x
    x = 21,143,193,984.83/209,456.15
  6. Step 6: Final answer
    x = 100,943.30

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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.