Home / 126,014.40-189,021.60-91,281.60

Finding the Fourth Proportional to 126,014.40, 189,021.60 and 91,281.60

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Solution

The fourth proportional to 126,014.40, 189,021.60 and 91,281.60 is: 136,922.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,014.40 : 189,021.60 = 91,281.60 : x
  2. Step 2: Convert to fraction form
    126,014.40/189,021.60 = 91,281.60/x
  3. Step 3: Cross multiply
    126,014.40x = 189,021.60 × 91,281.60
  4. Step 4: Simplify right side
    126,014.40x = 17,254,194,082.56
  5. Step 5: Solve for x
    x = 17,254,194,082.56/126,014.40
  6. Step 6: Final answer
    x = 136,922.40

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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.