Home / 134,939.56-186,233.04-78,350.94

Finding the Fourth Proportional to 134,939.56, 186,233.04 and 78,350.94

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Solution

The fourth proportional to 134,939.56, 186,233.04 and 78,350.94 is: 108,133.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,939.56 : 186,233.04 = 78,350.94 : x
  2. Step 2: Convert to fraction form
    134,939.56/186,233.04 = 78,350.94/x
  3. Step 3: Cross multiply
    134,939.56x = 186,233.04 × 78,350.94
  4. Step 4: Simplify right side
    134,939.56x = 14,591,533,743.06
  5. Step 5: Solve for x
    x = 14,591,533,743.06/134,939.56
  6. Step 6: Final answer
    x = 108,133.85

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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.