Home / 209,001.20-313,501.80-68,764.40

Finding the Fourth Proportional to 209,001.20, 313,501.80 and 68,764.40

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Solution

The fourth proportional to 209,001.20, 313,501.80 and 68,764.40 is: 103,146.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,001.20 : 313,501.80 = 68,764.40 : x
  2. Step 2: Convert to fraction form
    209,001.20/313,501.80 = 68,764.40/x
  3. Step 3: Cross multiply
    209,001.20x = 313,501.80 × 68,764.40
  4. Step 4: Simplify right side
    209,001.20x = 21,557,763,175.92
  5. Step 5: Solve for x
    x = 21,557,763,175.92/209,001.20
  6. Step 6: Final answer
    x = 103,146.60

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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.