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Finding the Fourth Proportional to 187,870, 259,278.53 and 107,309.56

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Solution

The fourth proportional to 187,870, 259,278.53 and 107,309.56 is: 148,097.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,870 : 259,278.53 = 107,309.56 : x
  2. Step 2: Convert to fraction form
    187,870/259,278.53 = 107,309.56/x
  3. Step 3: Cross multiply
    187,870x = 259,278.53 × 107,309.56
  4. Step 4: Simplify right side
    187,870x = 27,823,064,971.75
  5. Step 5: Solve for x
    x = 27,823,064,971.75/187,870
  6. Step 6: Final answer
    x = 148,097.43

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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.