Home / 135,308.10-186,720.57-74,881.29

Finding the Fourth Proportional to 135,308.10, 186,720.57 and 74,881.29

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Solution

The fourth proportional to 135,308.10, 186,720.57 and 74,881.29 is: 103,333.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,308.10 : 186,720.57 = 74,881.29 : x
  2. Step 2: Convert to fraction form
    135,308.10/186,720.57 = 74,881.29/x
  3. Step 3: Cross multiply
    135,308.10x = 186,720.57 × 74,881.29
  4. Step 4: Simplify right side
    135,308.10x = 13,981,877,151.14
  5. Step 5: Solve for x
    x = 13,981,877,151.14/135,308.10
  6. Step 6: Final answer
    x = 103,333.63

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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.