Home / 187,520.76-258,778.74-102,638.28

Finding the Fourth Proportional to 187,520.76, 258,778.74 and 102,638.28

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Solution

The fourth proportional to 187,520.76, 258,778.74 and 102,638.28 is: 141,640.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,520.76 : 258,778.74 = 102,638.28 : x
  2. Step 2: Convert to fraction form
    187,520.76/258,778.74 = 102,638.28/x
  3. Step 3: Cross multiply
    187,520.76x = 258,778.74 × 102,638.28
  4. Step 4: Simplify right side
    187,520.76x = 26,560,604,774.17
  5. Step 5: Solve for x
    x = 26,560,604,774.17/187,520.76
  6. Step 6: Final answer
    x = 141,640.88

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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.