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Finding the Fourth Proportional to 133,115.92, 183,697.52 and 72,684.92

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Solution

The fourth proportional to 133,115.92, 183,697.52 and 72,684.92 is: 100,303.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,115.92 : 183,697.52 = 72,684.92 : x
  2. Step 2: Convert to fraction form
    133,115.92/183,697.52 = 72,684.92/x
  3. Step 3: Cross multiply
    133,115.92x = 183,697.52 × 72,684.92
  4. Step 4: Simplify right side
    133,115.92x = 13,352,039,545.40
  5. Step 5: Solve for x
    x = 13,352,039,545.40/133,115.92
  6. Step 6: Final answer
    x = 100,303.85

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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.