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Finding the Fourth Proportional to 125,422.92, 173,072.09 and 74,426.87

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Solution

The fourth proportional to 125,422.92, 173,072.09 and 74,426.87 is: 102,702.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,422.92 : 173,072.09 = 74,426.87 : x
  2. Step 2: Convert to fraction form
    125,422.92/173,072.09 = 74,426.87/x
  3. Step 3: Cross multiply
    125,422.92x = 173,072.09 × 74,426.87
  4. Step 4: Simplify right side
    125,422.92x = 12,881,213,588.28
  5. Step 5: Solve for x
    x = 12,881,213,588.28/125,422.92
  6. Step 6: Final answer
    x = 102,702.23

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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.