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Finding the Fourth Proportional to 125,853.72, 173,674.92 and 68,490.60

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Solution

The fourth proportional to 125,853.72, 173,674.92 and 68,490.60 is: 94,515.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,853.72 : 173,674.92 = 68,490.60 : x
  2. Step 2: Convert to fraction form
    125,853.72/173,674.92 = 68,490.60/x
  3. Step 3: Cross multiply
    125,853.72x = 173,674.92 × 68,490.60
  4. Step 4: Simplify right side
    125,853.72x = 11,895,099,475.75
  5. Step 5: Solve for x
    x = 11,895,099,475.75/125,853.72
  6. Step 6: Final answer
    x = 94,515.28

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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.