Home / 133,115.05-183,706.21-72,691.30

Finding the Fourth Proportional to 133,115.05, 183,706.21 and 72,691.30

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Solution

The fourth proportional to 133,115.05, 183,706.21 and 72,691.30 is: 100,318.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,115.05 : 183,706.21 = 72,691.30 : x
  2. Step 2: Convert to fraction form
    133,115.05/183,706.21 = 72,691.30/x
  3. Step 3: Cross multiply
    133,115.05x = 183,706.21 × 72,691.30
  4. Step 4: Simplify right side
    133,115.05x = 13,353,843,222.97
  5. Step 5: Solve for x
    x = 13,353,843,222.97/133,115.05
  6. Step 6: Final answer
    x = 100,318.06

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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.