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Finding the Fourth Proportional to 129,685.98, 178,850.22 and 110,634.48

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Solution

The fourth proportional to 129,685.98, 178,850.22 and 110,634.48 is: 152,576.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,685.98 : 178,850.22 = 110,634.48 : x
  2. Step 2: Convert to fraction form
    129,685.98/178,850.22 = 110,634.48/x
  3. Step 3: Cross multiply
    129,685.98x = 178,850.22 × 110,634.48
  4. Step 4: Simplify right side
    129,685.98x = 19,787,001,087.59
  5. Step 5: Solve for x
    x = 19,787,001,087.59/129,685.98
  6. Step 6: Final answer
    x = 152,576.25

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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.