Home / 135,308.26-186,721.58-74,881.42

Finding the Fourth Proportional to 135,308.26, 186,721.58 and 74,881.42

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Solution

The fourth proportional to 135,308.26, 186,721.58 and 74,881.42 is: 103,334.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,308.26 : 186,721.58 = 74,881.42 : x
  2. Step 2: Convert to fraction form
    135,308.26/186,721.58 = 74,881.42/x
  3. Step 3: Cross multiply
    135,308.26x = 186,721.58 × 74,881.42
  4. Step 4: Simplify right side
    135,308.26x = 13,981,977,055.04
  5. Step 5: Solve for x
    x = 13,981,977,055.04/135,308.26
  6. Step 6: Final answer
    x = 103,334.25

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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.