Home / 134,832.15-186,105.38-78,261.75

Finding the Fourth Proportional to 134,832.15, 186,105.38 and 78,261.75

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Solution

The fourth proportional to 134,832.15, 186,105.38 and 78,261.75 is: 108,022.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,832.15 : 186,105.38 = 78,261.75 : x
  2. Step 2: Convert to fraction form
    134,832.15/186,105.38 = 78,261.75/x
  3. Step 3: Cross multiply
    134,832.15x = 186,105.38 × 78,261.75
  4. Step 4: Simplify right side
    134,832.15x = 14,564,932,331.91
  5. Step 5: Solve for x
    x = 14,564,932,331.91/134,832.15
  6. Step 6: Final answer
    x = 108,022.70

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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.