Home / 187,611.72-258,901.59-102,728.80

Finding the Fourth Proportional to 187,611.72, 258,901.59 and 102,728.80

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Solution

The fourth proportional to 187,611.72, 258,901.59 and 102,728.80 is: 141,764.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,611.72 : 258,901.59 = 102,728.80 : x
  2. Step 2: Convert to fraction form
    187,611.72/258,901.59 = 102,728.80/x
  3. Step 3: Cross multiply
    187,611.72x = 258,901.59 × 102,728.80
  4. Step 4: Simplify right side
    187,611.72x = 26,596,649,658.79
  5. Step 5: Solve for x
    x = 26,596,649,658.79/187,611.72
  6. Step 6: Final answer
    x = 141,764.33

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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.