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Finding the Fourth Proportional to 187,891.50, 259,426.35 and 120,940.14

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Solution

The fourth proportional to 187,891.50, 259,426.35 and 120,940.14 is: 166,984.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,891.50 : 259,426.35 = 120,940.14 : x
  2. Step 2: Convert to fraction form
    187,891.50/259,426.35 = 120,940.14/x
  3. Step 3: Cross multiply
    187,891.50x = 259,426.35 × 120,940.14
  4. Step 4: Simplify right side
    187,891.50x = 31,375,059,088.69
  5. Step 5: Solve for x
    x = 31,375,059,088.69/187,891.50
  6. Step 6: Final answer
    x = 166,984.98

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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.