Home / 133,205.38-183,836.14-72,785.21

Finding the Fourth Proportional to 133,205.38, 183,836.14 and 72,785.21

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Solution

The fourth proportional to 133,205.38, 183,836.14 and 72,785.21 is: 100,450.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,205.38 : 183,836.14 = 72,785.21 : x
  2. Step 2: Convert to fraction form
    133,205.38/183,836.14 = 72,785.21/x
  3. Step 3: Cross multiply
    133,205.38x = 183,836.14 × 72,785.21
  4. Step 4: Simplify right side
    133,205.38x = 13,380,552,055.49
  5. Step 5: Solve for x
    x = 13,380,552,055.49/133,205.38
  6. Step 6: Final answer
    x = 100,450.54

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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.