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Finding the Fourth Proportional to 125,455.25, 173,049.51 and 74,431.87

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Solution

The fourth proportional to 125,455.25, 173,049.51 and 74,431.87 is: 102,669.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,455.25 : 173,049.51 = 74,431.87 : x
  2. Step 2: Convert to fraction form
    125,455.25/173,049.51 = 74,431.87/x
  3. Step 3: Cross multiply
    125,455.25x = 173,049.51 × 74,431.87
  4. Step 4: Simplify right side
    125,455.25x = 12,880,397,766.64
  5. Step 5: Solve for x
    x = 12,880,397,766.64/125,455.25
  6. Step 6: Final answer
    x = 102,669.26

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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.