Home / 126,076.20-189,114.30-90,646.80

Finding the Fourth Proportional to 126,076.20, 189,114.30 and 90,646.80

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Solution

The fourth proportional to 126,076.20, 189,114.30 and 90,646.80 is: 135,970.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,076.20 : 189,114.30 = 90,646.80 : x
  2. Step 2: Convert to fraction form
    126,076.20/189,114.30 = 90,646.80/x
  3. Step 3: Cross multiply
    126,076.20x = 189,114.30 × 90,646.80
  4. Step 4: Simplify right side
    126,076.20x = 17,142,606,129.24
  5. Step 5: Solve for x
    x = 17,142,606,129.24/126,076.20
  6. Step 6: Final answer
    x = 135,970.20

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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.