Home / 187,288.50-258,454.20-102,405.56

Finding the Fourth Proportional to 187,288.50, 258,454.20 and 102,405.56

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Solution

The fourth proportional to 187,288.50, 258,454.20 and 102,405.56 is: 141,317.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,288.50 : 258,454.20 = 102,405.56 : x
  2. Step 2: Convert to fraction form
    187,288.50/258,454.20 = 102,405.56/x
  3. Step 3: Cross multiply
    187,288.50x = 258,454.20 × 102,405.56
  4. Step 4: Simplify right side
    187,288.50x = 26,467,147,731.49
  5. Step 5: Solve for x
    x = 26,467,147,731.49/187,288.50
  6. Step 6: Final answer
    x = 141,317.53

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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.