Home / 135,321.08-186,921.58-103,878.52

Finding the Fourth Proportional to 135,321.08, 186,921.58 and 103,878.52

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Solution

The fourth proportional to 135,321.08, 186,921.58 and 103,878.52 is: 143,489.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,321.08 : 186,921.58 = 103,878.52 : x
  2. Step 2: Convert to fraction form
    135,321.08/186,921.58 = 103,878.52/x
  3. Step 3: Cross multiply
    135,321.08x = 186,921.58 × 103,878.52
  4. Step 4: Simplify right side
    135,321.08x = 19,417,137,086.46
  5. Step 5: Solve for x
    x = 19,417,137,086.46/135,321.08
  6. Step 6: Final answer
    x = 143,489.37

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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.