Home / 207,913.40-312,015.90-133,215.20

Finding the Fourth Proportional to 207,913.40, 312,015.90 and 133,215.20

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Solution

The fourth proportional to 207,913.40, 312,015.90 and 133,215.20 is: 199,916.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,913.40 : 312,015.90 = 133,215.20 : x
  2. Step 2: Convert to fraction form
    207,913.40/312,015.90 = 133,215.20/x
  3. Step 3: Cross multiply
    207,913.40x = 312,015.90 × 133,215.20
  4. Step 4: Simplify right side
    207,913.40x = 41,565,260,521.68
  5. Step 5: Solve for x
    x = 41,565,260,521.68/207,913.40
  6. Step 6: Final answer
    x = 199,916.22

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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.