Home / 135,218.52-186,594.21-74,785.65

Finding the Fourth Proportional to 135,218.52, 186,594.21 and 74,785.65

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Solution

The fourth proportional to 135,218.52, 186,594.21 and 74,785.65 is: 103,200.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,218.52 : 186,594.21 = 74,785.65 : x
  2. Step 2: Convert to fraction form
    135,218.52/186,594.21 = 74,785.65/x
  3. Step 3: Cross multiply
    135,218.52x = 186,594.21 × 74,785.65
  4. Step 4: Simplify right side
    135,218.52x = 13,954,569,281.09
  5. Step 5: Solve for x
    x = 13,954,569,281.09/135,218.52
  6. Step 6: Final answer
    x = 103,200.13

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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.