Home / 126,399.14-189,535.20-42,129.80

Finding the Fourth Proportional to 126,399.14, 189,535.20 and 42,129.80

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Solution

The fourth proportional to 126,399.14, 189,535.20 and 42,129.80 is: 63,173.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,399.14 : 189,535.20 = 42,129.80 : x
  2. Step 2: Convert to fraction form
    126,399.14/189,535.20 = 42,129.80/x
  3. Step 3: Cross multiply
    126,399.14x = 189,535.20 × 42,129.80
  4. Step 4: Simplify right side
    126,399.14x = 7,985,080,068.96
  5. Step 5: Solve for x
    x = 7,985,080,068.96/126,399.14
  6. Step 6: Final answer
    x = 63,173.53

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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.