Home / 207,939.40-312,054.90-89,695.60

Finding the Fourth Proportional to 207,939.40, 312,054.90 and 89,695.60

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Solution

The fourth proportional to 207,939.40, 312,054.90 and 89,695.60 is: 134,606.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,939.40 : 312,054.90 = 89,695.60 : x
  2. Step 2: Convert to fraction form
    207,939.40/312,054.90 = 89,695.60/x
  3. Step 3: Cross multiply
    207,939.40x = 312,054.90 × 89,695.60
  4. Step 4: Simplify right side
    207,939.40x = 27,989,951,488.44
  5. Step 5: Solve for x
    x = 27,989,951,488.44/207,939.40
  6. Step 6: Final answer
    x = 134,606.29

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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.