Home / 135,179.15-186,543.53-74,747.79

Finding the Fourth Proportional to 135,179.15, 186,543.53 and 74,747.79

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Solution

The fourth proportional to 135,179.15, 186,543.53 and 74,747.79 is: 103,149.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,179.15 : 186,543.53 = 74,747.79 : x
  2. Step 2: Convert to fraction form
    135,179.15/186,543.53 = 74,747.79/x
  3. Step 3: Cross multiply
    135,179.15x = 186,543.53 × 74,747.79
  4. Step 4: Simplify right side
    135,179.15x = 13,943,716,606.30
  5. Step 5: Solve for x
    x = 13,943,716,606.30/135,179.15
  6. Step 6: Final answer
    x = 103,149.91

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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.