Home / 135,352.41-186,784.07-74,921.76

Finding the Fourth Proportional to 135,352.41, 186,784.07 and 74,921.76

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Solution

The fourth proportional to 135,352.41, 186,784.07 and 74,921.76 is: 103,390.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,352.41 : 186,784.07 = 74,921.76 : x
  2. Step 2: Convert to fraction form
    135,352.41/186,784.07 = 74,921.76/x
  3. Step 3: Cross multiply
    135,352.41x = 186,784.07 × 74,921.76
  4. Step 4: Simplify right side
    135,352.41x = 13,994,191,871.15
  5. Step 5: Solve for x
    x = 13,994,191,871.15/135,352.41
  6. Step 6: Final answer
    x = 103,390.78

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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.