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Finding the Fourth Proportional to 187,889.76, 259,285.08 and 103,006.80

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Solution

The fourth proportional to 187,889.76, 259,285.08 and 103,006.80 is: 142,147.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,889.76 : 259,285.08 = 103,006.80 : x
  2. Step 2: Convert to fraction form
    187,889.76/259,285.08 = 103,006.80/x
  3. Step 3: Cross multiply
    187,889.76x = 259,285.08 × 103,006.80
  4. Step 4: Simplify right side
    187,889.76x = 26,708,126,378.54
  5. Step 5: Solve for x
    x = 26,708,126,378.54/187,889.76
  6. Step 6: Final answer
    x = 142,147.86

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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.