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Finding the Fourth Proportional to 187,892.20, 259,291.80 and 101,851.28

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Solution

The fourth proportional to 187,892.20, 259,291.80 and 101,851.28 is: 140,555.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,892.20 : 259,291.80 = 101,851.28 : x
  2. Step 2: Convert to fraction form
    187,892.20/259,291.80 = 101,851.28/x
  3. Step 3: Cross multiply
    187,892.20x = 259,291.80 × 101,851.28
  4. Step 4: Simplify right side
    187,892.20x = 26,409,201,723.50
  5. Step 5: Solve for x
    x = 26,409,201,723.50/187,892.20
  6. Step 6: Final answer
    x = 140,555.07

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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.