Home / 207,766.40-311,795.40-133,068.20

Finding the Fourth Proportional to 207,766.40, 311,795.40 and 133,068.20

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Solution

The fourth proportional to 207,766.40, 311,795.40 and 133,068.20 is: 199,695.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,766.40 : 311,795.40 = 133,068.20 : x
  2. Step 2: Convert to fraction form
    207,766.40/311,795.40 = 133,068.20/x
  3. Step 3: Cross multiply
    207,766.40x = 311,795.40 × 133,068.20
  4. Step 4: Simplify right side
    207,766.40x = 41,490,052,646.28
  5. Step 5: Solve for x
    x = 41,490,052,646.28/207,766.40
  6. Step 6: Final answer
    x = 199,695.68

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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.