Home / 172,965.90-238,682.65-100,363.17

Finding the Fourth Proportional to 172,965.90, 238,682.65 and 100,363.17

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Solution

The fourth proportional to 172,965.90, 238,682.65 and 100,363.17 is: 138,495.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,965.90 : 238,682.65 = 100,363.17 : x
  2. Step 2: Convert to fraction form
    172,965.90/238,682.65 = 100,363.17/x
  3. Step 3: Cross multiply
    172,965.90x = 238,682.65 × 100,363.17
  4. Step 4: Simplify right side
    172,965.90x = 23,954,946,876.18
  5. Step 5: Solve for x
    x = 23,954,946,876.18/172,965.90
  6. Step 6: Final answer
    x = 138,495.20

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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.