Home / 142,980.31-214,331-68,080.33

Finding the Fourth Proportional to 142,980.31, 214,331 and 68,080.33

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Solution

The fourth proportional to 142,980.31, 214,331 and 68,080.33 is: 102,054.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,980.31 : 214,331 = 68,080.33 : x
  2. Step 2: Convert to fraction form
    142,980.31/214,331 = 68,080.33/x
  3. Step 3: Cross multiply
    142,980.31x = 214,331 × 68,080.33
  4. Step 4: Simplify right side
    142,980.31x = 14,591,725,209.23
  5. Step 5: Solve for x
    x = 14,591,725,209.23/142,980.31
  6. Step 6: Final answer
    x = 102,054.09

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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.