Home / 221,666.20-305,914.96-126,172.88

Finding the Fourth Proportional to 221,666.20, 305,914.96 and 126,172.88

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Solution

The fourth proportional to 221,666.20, 305,914.96 and 126,172.88 is: 174,127.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,666.20 : 305,914.96 = 126,172.88 : x
  2. Step 2: Convert to fraction form
    221,666.20/305,914.96 = 126,172.88/x
  3. Step 3: Cross multiply
    221,666.20x = 305,914.96 × 126,172.88
  4. Step 4: Simplify right side
    221,666.20x = 38,598,171,538.28
  5. Step 5: Solve for x
    x = 38,598,171,538.28/221,666.20
  6. Step 6: Final answer
    x = 174,127.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.