Home / 187,669.68-258,980.40-102,786

Finding the Fourth Proportional to 187,669.68, 258,980.40 and 102,786

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Solution

The fourth proportional to 187,669.68, 258,980.40 and 102,786 is: 141,842.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,669.68 : 258,980.40 = 102,786 : x
  2. Step 2: Convert to fraction form
    187,669.68/258,980.40 = 102,786/x
  3. Step 3: Cross multiply
    187,669.68x = 258,980.40 × 102,786
  4. Step 4: Simplify right side
    187,669.68x = 26,619,559,394.40
  5. Step 5: Solve for x
    x = 26,619,559,394.40/187,669.68
  6. Step 6: Final answer
    x = 141,842.62

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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.