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Finding the Fourth Proportional to 119,715.21, 165,209.49 and 66,002.49

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Solution

The fourth proportional to 119,715.21, 165,209.49 and 66,002.49 is: 91,084.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,715.21 : 165,209.49 = 66,002.49 : x
  2. Step 2: Convert to fraction form
    119,715.21/165,209.49 = 66,002.49/x
  3. Step 3: Cross multiply
    119,715.21x = 165,209.49 × 66,002.49
  4. Step 4: Simplify right side
    119,715.21x = 10,904,237,711.63
  5. Step 5: Solve for x
    x = 10,904,237,711.63/119,715.21
  6. Step 6: Final answer
    x = 91,084.81

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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.