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Finding the Fourth Proportional to 187,759.50, 259,129.80 and 107,198.52

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Solution

The fourth proportional to 187,759.50, 259,129.80 and 107,198.52 is: 147,946.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,759.50 : 259,129.80 = 107,198.52 : x
  2. Step 2: Convert to fraction form
    187,759.50/259,129.80 = 107,198.52/x
  3. Step 3: Cross multiply
    187,759.50x = 259,129.80 × 107,198.52
  4. Step 4: Simplify right side
    187,759.50x = 27,778,331,047.90
  5. Step 5: Solve for x
    x = 27,778,331,047.90/187,759.50
  6. Step 6: Final answer
    x = 147,946.34

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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.