Home / 135,189.60-186,558.12-74,758.56

Finding the Fourth Proportional to 135,189.60, 186,558.12 and 74,758.56

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Solution

The fourth proportional to 135,189.60, 186,558.12 and 74,758.56 is: 103,164.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,189.60 : 186,558.12 = 74,758.56 : x
  2. Step 2: Convert to fraction form
    135,189.60/186,558.12 = 74,758.56/x
  3. Step 3: Cross multiply
    135,189.60x = 186,558.12 × 74,758.56
  4. Step 4: Simplify right side
    135,189.60x = 13,946,816,407.51
  5. Step 5: Solve for x
    x = 13,946,816,407.51/135,189.60
  6. Step 6: Final answer
    x = 103,164.86

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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.