Home / 115,738.64-159,666.36-67,991.12

Finding the Fourth Proportional to 115,738.64, 159,666.36 and 67,991.12

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Solution

The fourth proportional to 115,738.64, 159,666.36 and 67,991.12 is: 93,796.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,738.64 : 159,666.36 = 67,991.12 : x
  2. Step 2: Convert to fraction form
    115,738.64/159,666.36 = 67,991.12/x
  3. Step 3: Cross multiply
    115,738.64x = 159,666.36 × 67,991.12
  4. Step 4: Simplify right side
    115,738.64x = 10,855,894,642.72
  5. Step 5: Solve for x
    x = 10,855,894,642.72/115,738.64
  6. Step 6: Final answer
    x = 93,796.63

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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.