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Finding the Fourth Proportional to 125,429.70, 188,144.55 and 83,366.40

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Solution

The fourth proportional to 125,429.70, 188,144.55 and 83,366.40 is: 125,049.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,429.70 : 188,144.55 = 83,366.40 : x
  2. Step 2: Convert to fraction form
    125,429.70/188,144.55 = 83,366.40/x
  3. Step 3: Cross multiply
    125,429.70x = 188,144.55 × 83,366.40
  4. Step 4: Simplify right side
    125,429.70x = 15,684,933,813.12
  5. Step 5: Solve for x
    x = 15,684,933,813.12/125,429.70
  6. Step 6: Final answer
    x = 125,049.60

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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.