Home / 115,390.34-159,227.89-66,979.43

Finding the Fourth Proportional to 115,390.34, 159,227.89 and 66,979.43

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Solution

The fourth proportional to 115,390.34, 159,227.89 and 66,979.43 is: 92,425.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,390.34 : 159,227.89 = 66,979.43 : x
  2. Step 2: Convert to fraction form
    115,390.34/159,227.89 = 66,979.43/x
  3. Step 3: Cross multiply
    115,390.34x = 159,227.89 × 66,979.43
  4. Step 4: Simplify right side
    115,390.34x = 10,664,992,181.27
  5. Step 5: Solve for x
    x = 10,664,992,181.27/115,390.34
  6. Step 6: Final answer
    x = 92,425.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.