Home / 187,387.08-258,701.06-123,909

Finding the Fourth Proportional to 187,387.08, 258,701.06 and 123,909

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Solution

The fourth proportional to 187,387.08, 258,701.06 and 123,909 is: 171,065.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,387.08 : 258,701.06 = 123,909 : x
  2. Step 2: Convert to fraction form
    187,387.08/258,701.06 = 123,909/x
  3. Step 3: Cross multiply
    187,387.08x = 258,701.06 × 123,909
  4. Step 4: Simplify right side
    187,387.08x = 32,055,389,643.54
  5. Step 5: Solve for x
    x = 32,055,389,643.54/187,387.08
  6. Step 6: Final answer
    x = 171,065.10

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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.