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Finding the Fourth Proportional to 124,745.25, 172,148.49 and 67,384.56

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Solution

The fourth proportional to 124,745.25, 172,148.49 and 67,384.56 is: 92,990.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,745.25 : 172,148.49 = 67,384.56 : x
  2. Step 2: Convert to fraction form
    124,745.25/172,148.49 = 67,384.56/x
  3. Step 3: Cross multiply
    124,745.25x = 172,148.49 × 67,384.56
  4. Step 4: Simplify right side
    124,745.25x = 11,600,150,253.31
  5. Step 5: Solve for x
    x = 11,600,150,253.31/124,745.25
  6. Step 6: Final answer
    x = 92,990.72

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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.