Home / 142,531.54-213,371.37-86,201.25

Finding the Fourth Proportional to 142,531.54, 213,371.37 and 86,201.25

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Solution

The fourth proportional to 142,531.54, 213,371.37 and 86,201.25 is: 129,044.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,531.54 : 213,371.37 = 86,201.25 : x
  2. Step 2: Convert to fraction form
    142,531.54/213,371.37 = 86,201.25/x
  3. Step 3: Cross multiply
    142,531.54x = 213,371.37 × 86,201.25
  4. Step 4: Simplify right side
    142,531.54x = 18,392,878,808.21
  5. Step 5: Solve for x
    x = 18,392,878,808.21/142,531.54
  6. Step 6: Final answer
    x = 129,044.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.