Home / 115,134.72-158,886.16-66,745.97

Finding the Fourth Proportional to 115,134.72, 158,886.16 and 66,745.97

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Solution

The fourth proportional to 115,134.72, 158,886.16 and 66,745.97 is: 92,109.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,134.72 : 158,886.16 = 66,745.97 : x
  2. Step 2: Convert to fraction form
    115,134.72/158,886.16 = 66,745.97/x
  3. Step 3: Cross multiply
    115,134.72x = 158,886.16 × 66,745.97
  4. Step 4: Simplify right side
    115,134.72x = 10,605,011,397.04
  5. Step 5: Solve for x
    x = 10,605,011,397.04/115,134.72
  6. Step 6: Final answer
    x = 92,109.59

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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.