Home / 133,381.74-199,968.78-66,787.58

Finding the Fourth Proportional to 133,381.74, 199,968.78 and 66,787.58

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Solution

The fourth proportional to 133,381.74, 199,968.78 and 66,787.58 is: 100,129.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,381.74 : 199,968.78 = 66,787.58 : x
  2. Step 2: Convert to fraction form
    133,381.74/199,968.78 = 66,787.58/x
  3. Step 3: Cross multiply
    133,381.74x = 199,968.78 × 66,787.58
  4. Step 4: Simplify right side
    133,381.74x = 13,355,430,891.75
  5. Step 5: Solve for x
    x = 13,355,430,891.75/133,381.74
  6. Step 6: Final answer
    x = 100,129.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.