Home / 115,399-159,250.62-81,923.32

Finding the Fourth Proportional to 115,399, 159,250.62 and 81,923.32

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Solution

The fourth proportional to 115,399, 159,250.62 and 81,923.32 is: 113,054.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,399 : 159,250.62 = 81,923.32 : x
  2. Step 2: Convert to fraction form
    115,399/159,250.62 = 81,923.32/x
  3. Step 3: Cross multiply
    115,399x = 159,250.62 × 81,923.32
  4. Step 4: Simplify right side
    115,399x = 13,046,339,502.46
  5. Step 5: Solve for x
    x = 13,046,339,502.46/115,399
  6. Step 6: Final answer
    x = 113,054.18

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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.