Home / 172,724.16-238,359.88-100,141.20

Finding the Fourth Proportional to 172,724.16, 238,359.88 and 100,141.20

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Solution

The fourth proportional to 172,724.16, 238,359.88 and 100,141.20 is: 138,195.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,724.16 : 238,359.88 = 100,141.20 : x
  2. Step 2: Convert to fraction form
    172,724.16/238,359.88 = 100,141.20/x
  3. Step 3: Cross multiply
    172,724.16x = 238,359.88 × 100,141.20
  4. Step 4: Simplify right side
    172,724.16x = 23,869,644,415.06
  5. Step 5: Solve for x
    x = 23,869,644,415.06/172,724.16
  6. Step 6: Final answer
    x = 138,195.17

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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.