Home / 125,818.80-188,946.90-66,769.80

Finding the Fourth Proportional to 125,818.80, 188,946.90 and 66,769.80

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Solution

The fourth proportional to 125,818.80, 188,946.90 and 66,769.80 is: 100,270.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,818.80 : 188,946.90 = 66,769.80 : x
  2. Step 2: Convert to fraction form
    125,818.80/188,946.90 = 66,769.80/x
  3. Step 3: Cross multiply
    125,818.80x = 188,946.90 × 66,769.80
  4. Step 4: Simplify right side
    125,818.80x = 12,615,946,723.62
  5. Step 5: Solve for x
    x = 12,615,946,723.62/125,818.80
  6. Step 6: Final answer
    x = 100,270.76

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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.