Home / 124,169.28-171,330.96-81,137.40

Finding the Fourth Proportional to 124,169.28, 171,330.96 and 81,137.40

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Solution

The fourth proportional to 124,169.28, 171,330.96 and 81,137.40 is: 111,954.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,169.28 : 171,330.96 = 81,137.40 : x
  2. Step 2: Convert to fraction form
    124,169.28/171,330.96 = 81,137.40/x
  3. Step 3: Cross multiply
    124,169.28x = 171,330.96 × 81,137.40
  4. Step 4: Simplify right side
    124,169.28x = 13,901,348,633.90
  5. Step 5: Solve for x
    x = 13,901,348,633.90/124,169.28
  6. Step 6: Final answer
    x = 111,954.81

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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.