Home / 115,178.64-158,986.32-67,447.36

Finding the Fourth Proportional to 115,178.64, 158,986.32 and 67,447.36

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Solution

The fourth proportional to 115,178.64, 158,986.32 and 67,447.36 is: 93,100.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,178.64 : 158,986.32 = 67,447.36 : x
  2. Step 2: Convert to fraction form
    115,178.64/158,986.32 = 67,447.36/x
  3. Step 3: Cross multiply
    115,178.64x = 158,986.32 × 67,447.36
  4. Step 4: Simplify right side
    115,178.64x = 10,723,207,560.12
  5. Step 5: Solve for x
    x = 10,723,207,560.12/115,178.64
  6. Step 6: Final answer
    x = 93,100.66

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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.