Home / 134,967.75-186,255.50-78,382.77

Finding the Fourth Proportional to 134,967.75, 186,255.50 and 78,382.77

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Solution

The fourth proportional to 134,967.75, 186,255.50 and 78,382.77 is: 108,168.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,967.75 : 186,255.50 = 78,382.77 : x
  2. Step 2: Convert to fraction form
    134,967.75/186,255.50 = 78,382.77/x
  3. Step 3: Cross multiply
    134,967.75x = 186,255.50 × 78,382.77
  4. Step 4: Simplify right side
    134,967.75x = 14,599,221,625.82
  5. Step 5: Solve for x
    x = 14,599,221,625.82/134,967.75
  6. Step 6: Final answer
    x = 108,168.22

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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.