Home / 231,724.84-319,752.20-129,742.32

Finding the Fourth Proportional to 231,724.84, 319,752.20 and 129,742.32

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Solution

The fourth proportional to 231,724.84, 319,752.20 and 129,742.32 is: 179,028.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,724.84 : 319,752.20 = 129,742.32 : x
  2. Step 2: Convert to fraction form
    231,724.84/319,752.20 = 129,742.32/x
  3. Step 3: Cross multiply
    231,724.84x = 319,752.20 × 129,742.32
  4. Step 4: Simplify right side
    231,724.84x = 41,485,392,253.10
  5. Step 5: Solve for x
    x = 41,485,392,253.10/231,724.84
  6. Step 6: Final answer
    x = 179,028.68

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1.5x scale

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.