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Finding the Fourth Proportional to 136,081.75, 187,799.22 and 75,653.40

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Solution

The fourth proportional to 136,081.75, 187,799.22 and 75,653.40 is: 104,405.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,081.75 : 187,799.22 = 75,653.40 : x
  2. Step 2: Convert to fraction form
    136,081.75/187,799.22 = 75,653.40/x
  3. Step 3: Cross multiply
    136,081.75x = 187,799.22 × 75,653.40
  4. Step 4: Simplify right side
    136,081.75x = 14,207,649,510.35
  5. Step 5: Solve for x
    x = 14,207,649,510.35/136,081.75
  6. Step 6: Final answer
    x = 104,405.25

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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.