Home / 134,559.12-185,684.76-74,128.56

Finding the Fourth Proportional to 134,559.12, 185,684.76 and 74,128.56

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Solution

The fourth proportional to 134,559.12, 185,684.76 and 74,128.56 is: 102,293.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,559.12 : 185,684.76 = 74,128.56 : x
  2. Step 2: Convert to fraction form
    134,559.12/185,684.76 = 74,128.56/x
  3. Step 3: Cross multiply
    134,559.12x = 185,684.76 × 74,128.56
  4. Step 4: Simplify right side
    134,559.12x = 13,764,543,872.75
  5. Step 5: Solve for x
    x = 13,764,543,872.75/134,559.12
  6. Step 6: Final answer
    x = 102,293.65

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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.