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Finding the Fourth Proportional to 124,807.54, 172,234.49 and 68,218.91

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Solution

The fourth proportional to 124,807.54, 172,234.49 and 68,218.91 is: 94,142.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,807.54 : 172,234.49 = 68,218.91 : x
  2. Step 2: Convert to fraction form
    124,807.54/172,234.49 = 68,218.91/x
  3. Step 3: Cross multiply
    124,807.54x = 172,234.49 × 68,218.91
  4. Step 4: Simplify right side
    124,807.54x = 11,749,649,172.21
  5. Step 5: Solve for x
    x = 11,749,649,172.21/124,807.54
  6. Step 6: Final answer
    x = 94,142.14

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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.