Home / 135,150.72-186,491.88-74,713.20

Finding the Fourth Proportional to 135,150.72, 186,491.88 and 74,713.20

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Solution

The fourth proportional to 135,150.72, 186,491.88 and 74,713.20 is: 103,095.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,150.72 : 186,491.88 = 74,713.20 : x
  2. Step 2: Convert to fraction form
    135,150.72/186,491.88 = 74,713.20/x
  3. Step 3: Cross multiply
    135,150.72x = 186,491.88 × 74,713.20
  4. Step 4: Simplify right side
    135,150.72x = 13,933,405,128.82
  5. Step 5: Solve for x
    x = 13,933,405,128.82/135,150.72
  6. Step 6: Final answer
    x = 103,095.31

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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.