Home / 115,926.96-159,903-90,732.72

Finding the Fourth Proportional to 115,926.96, 159,903 and 90,732.72

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Solution

The fourth proportional to 115,926.96, 159,903 and 90,732.72 is: 125,151.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,926.96 : 159,903 = 90,732.72 : x
  2. Step 2: Convert to fraction form
    115,926.96/159,903 = 90,732.72/x
  3. Step 3: Cross multiply
    115,926.96x = 159,903 × 90,732.72
  4. Step 4: Simplify right side
    115,926.96x = 14,508,434,126.16
  5. Step 5: Solve for x
    x = 14,508,434,126.16/115,926.96
  6. Step 6: Final answer
    x = 125,151.51

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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.