Home / 187,716.68-258,977.54-138,775.81

Finding the Fourth Proportional to 187,716.68, 258,977.54 and 138,775.81

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Solution

The fourth proportional to 187,716.68, 258,977.54 and 138,775.81 is: 191,457.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,716.68 : 258,977.54 = 138,775.81 : x
  2. Step 2: Convert to fraction form
    187,716.68/258,977.54 = 138,775.81/x
  3. Step 3: Cross multiply
    187,716.68x = 258,977.54 × 138,775.81
  4. Step 4: Simplify right side
    187,716.68x = 35,939,818,405.37
  5. Step 5: Solve for x
    x = 35,939,818,405.37/187,716.68
  6. Step 6: Final answer
    x = 191,457.77

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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.