Home / 187,109.16-258,214.02-102,229.80

Finding the Fourth Proportional to 187,109.16, 258,214.02 and 102,229.80

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Solution

The fourth proportional to 187,109.16, 258,214.02 and 102,229.80 is: 141,078.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,109.16 : 258,214.02 = 102,229.80 : x
  2. Step 2: Convert to fraction form
    187,109.16/258,214.02 = 102,229.80/x
  3. Step 3: Cross multiply
    187,109.16x = 258,214.02 × 102,229.80
  4. Step 4: Simplify right side
    187,109.16x = 26,397,167,621.80
  5. Step 5: Solve for x
    x = 26,397,167,621.80/187,109.16
  6. Step 6: Final answer
    x = 141,078.97

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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.