Home / 91,198.72-136,590.30-74,533.84

Finding the Fourth Proportional to 91,198.72, 136,590.30 and 74,533.84

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Solution

The fourth proportional to 91,198.72, 136,590.30 and 74,533.84 is: 111,630.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,198.72 : 136,590.30 = 74,533.84 : x
  2. Step 2: Convert to fraction form
    91,198.72/136,590.30 = 74,533.84/x
  3. Step 3: Cross multiply
    91,198.72x = 136,590.30 × 74,533.84
  4. Step 4: Simplify right side
    91,198.72x = 10,180,599,565.75
  5. Step 5: Solve for x
    x = 10,180,599,565.75/91,198.72
  6. Step 6: Final answer
    x = 111,630.95

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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.