Home / 134,640.37-185,814.39-74,221.76

Finding the Fourth Proportional to 134,640.37, 185,814.39 and 74,221.76

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Solution

The fourth proportional to 134,640.37, 185,814.39 and 74,221.76 is: 102,431.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,640.37 : 185,814.39 = 74,221.76 : x
  2. Step 2: Convert to fraction form
    134,640.37/185,814.39 = 74,221.76/x
  3. Step 3: Cross multiply
    134,640.37x = 185,814.39 × 74,221.76
  4. Step 4: Simplify right side
    134,640.37x = 13,791,471,059.13
  5. Step 5: Solve for x
    x = 13,791,471,059.13/134,640.37
  6. Step 6: Final answer
    x = 102,431.92

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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.