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Finding the Fourth Proportional to 124,791.78, 172,210.10 and 68,203.56

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Solution

The fourth proportional to 124,791.78, 172,210.10 and 68,203.56 is: 94,119.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,791.78 : 172,210.10 = 68,203.56 : x
  2. Step 2: Convert to fraction form
    124,791.78/172,210.10 = 68,203.56/x
  3. Step 3: Cross multiply
    124,791.78x = 172,210.10 × 68,203.56
  4. Step 4: Simplify right side
    124,791.78x = 11,745,341,887.96
  5. Step 5: Solve for x
    x = 11,745,341,887.96/124,791.78
  6. Step 6: Final answer
    x = 94,119.52

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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.