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Finding the Fourth Proportional to 126,012.80, 188,630.40 and 73,265.60

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Solution

The fourth proportional to 126,012.80, 188,630.40 and 73,265.60 is: 109,672.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,012.80 : 188,630.40 = 73,265.60 : x
  2. Step 2: Convert to fraction form
    126,012.80/188,630.40 = 73,265.60/x
  3. Step 3: Cross multiply
    126,012.80x = 188,630.40 × 73,265.60
  4. Step 4: Simplify right side
    126,012.80x = 13,820,119,434.24
  5. Step 5: Solve for x
    x = 13,820,119,434.24/126,012.80
  6. Step 6: Final answer
    x = 109,672.35

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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.