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Finding the Fourth Proportional to 125,087.76, 187,573.32 and 72,512.28

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Solution

The fourth proportional to 125,087.76, 187,573.32 and 72,512.28 is: 108,734.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,087.76 : 187,573.32 = 72,512.28 : x
  2. Step 2: Convert to fraction form
    125,087.76/187,573.32 = 72,512.28/x
  3. Step 3: Cross multiply
    125,087.76x = 187,573.32 × 72,512.28
  4. Step 4: Simplify right side
    125,087.76x = 13,601,369,100.37
  5. Step 5: Solve for x
    x = 13,601,369,100.37/125,087.76
  6. Step 6: Final answer
    x = 108,734.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.