Home / 187,428.31-258,654.80-102,547.19

Finding the Fourth Proportional to 187,428.31, 258,654.80 and 102,547.19

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Solution

The fourth proportional to 187,428.31, 258,654.80 and 102,547.19 is: 141,517.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,428.31 : 258,654.80 = 102,547.19 : x
  2. Step 2: Convert to fraction form
    187,428.31/258,654.80 = 102,547.19/x
  3. Step 3: Cross multiply
    187,428.31x = 258,654.80 × 102,547.19
  4. Step 4: Simplify right side
    187,428.31x = 26,524,322,920.01
  5. Step 5: Solve for x
    x = 26,524,322,920.01/187,428.31
  6. Step 6: Final answer
    x = 141,517.16

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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.