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Finding the Fourth Proportional to 133,092.90, 199,639.35 and 79,948.80

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Solution

The fourth proportional to 133,092.90, 199,639.35 and 79,948.80 is: 119,923.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,092.90 : 199,639.35 = 79,948.80 : x
  2. Step 2: Convert to fraction form
    133,092.90/199,639.35 = 79,948.80/x
  3. Step 3: Cross multiply
    133,092.90x = 199,639.35 × 79,948.80
  4. Step 4: Simplify right side
    133,092.90x = 15,960,926,465.28
  5. Step 5: Solve for x
    x = 15,960,926,465.28/133,092.90
  6. Step 6: Final answer
    x = 119,923.20

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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.