Home / 134,406.78-185,509.35-80,694.06

Finding the Fourth Proportional to 134,406.78, 185,509.35 and 80,694.06

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Solution

The fourth proportional to 134,406.78, 185,509.35 and 80,694.06 is: 111,374.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,406.78 : 185,509.35 = 80,694.06 : x
  2. Step 2: Convert to fraction form
    134,406.78/185,509.35 = 80,694.06/x
  3. Step 3: Cross multiply
    134,406.78x = 185,509.35 × 80,694.06
  4. Step 4: Simplify right side
    134,406.78x = 14,969,502,619.46
  5. Step 5: Solve for x
    x = 14,969,502,619.46/134,406.78
  6. Step 6: Final answer
    x = 111,374.61

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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.