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Finding the Fourth Proportional to 133,065.64, 183,628.94 and 72,636.68

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Solution

The fourth proportional to 133,065.64, 183,628.94 and 72,636.68 is: 100,237.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,065.64 : 183,628.94 = 72,636.68 : x
  2. Step 2: Convert to fraction form
    133,065.64/183,628.94 = 72,636.68/x
  3. Step 3: Cross multiply
    133,065.64x = 183,628.94 × 72,636.68
  4. Step 4: Simplify right side
    133,065.64x = 13,338,196,553.52
  5. Step 5: Solve for x
    x = 13,338,196,553.52/133,065.64
  6. Step 6: Final answer
    x = 100,237.72

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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.