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Finding the Fourth Proportional to 192,172.30, 287,869.65 and 133,074.70

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Solution

The fourth proportional to 192,172.30, 287,869.65 and 133,074.70 is: 199,342.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,172.30 : 287,869.65 = 133,074.70 : x
  2. Step 2: Convert to fraction form
    192,172.30/287,869.65 = 133,074.70/x
  3. Step 3: Cross multiply
    192,172.30x = 287,869.65 × 133,074.70
  4. Step 4: Simplify right side
    192,172.30x = 38,308,167,312.86
  5. Step 5: Solve for x
    x = 38,308,167,312.86/192,172.30
  6. Step 6: Final answer
    x = 199,342.82

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1.5x scale

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.