Home / 187,117.20-258,257.16-111,707.28

Finding the Fourth Proportional to 187,117.20, 258,257.16 and 111,707.28

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Solution

The fourth proportional to 187,117.20, 258,257.16 and 111,707.28 is: 154,177.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,117.20 : 258,257.16 = 111,707.28 : x
  2. Step 2: Convert to fraction form
    187,117.20/258,257.16 = 111,707.28/x
  3. Step 3: Cross multiply
    187,117.20x = 258,257.16 × 111,707.28
  4. Step 4: Simplify right side
    187,117.20x = 28,849,204,884.12
  5. Step 5: Solve for x
    x = 28,849,204,884.12/187,117.20
  6. Step 6: Final answer
    x = 154,177.19

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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.