Home / 127,218.60-190,827.92-42,979

Finding the Fourth Proportional to 127,218.60, 190,827.92 and 42,979

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Solution

The fourth proportional to 127,218.60, 190,827.92 and 42,979 is: 64,468.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,218.60 : 190,827.92 = 42,979 : x
  2. Step 2: Convert to fraction form
    127,218.60/190,827.92 = 42,979/x
  3. Step 3: Cross multiply
    127,218.60x = 190,827.92 × 42,979
  4. Step 4: Simplify right side
    127,218.60x = 8,201,593,173.68
  5. Step 5: Solve for x
    x = 8,201,593,173.68/127,218.60
  6. Step 6: Final answer
    x = 64,468.51

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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.