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Finding the Fourth Proportional to 105,125.88, 157,603.68 and 71,761.92

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Solution

The fourth proportional to 105,125.88, 157,603.68 and 71,761.92 is: 107,584.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,125.88 : 157,603.68 = 71,761.92 : x
  2. Step 2: Convert to fraction form
    105,125.88/157,603.68 = 71,761.92/x
  3. Step 3: Cross multiply
    105,125.88x = 157,603.68 × 71,761.92
  4. Step 4: Simplify right side
    105,125.88x = 11,309,942,675.87
  5. Step 5: Solve for x
    x = 11,309,942,675.87/105,125.88
  6. Step 6: Final answer
    x = 107,584.76

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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.