Home / 126,456.08-189,735.12-56,287.40

Finding the Fourth Proportional to 126,456.08, 189,735.12 and 56,287.40

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Solution

The fourth proportional to 126,456.08, 189,735.12 and 56,287.40 is: 84,453.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,456.08 : 189,735.12 = 56,287.40 : x
  2. Step 2: Convert to fraction form
    126,456.08/189,735.12 = 56,287.40/x
  3. Step 3: Cross multiply
    126,456.08x = 189,735.12 × 56,287.40
  4. Step 4: Simplify right side
    126,456.08x = 10,679,696,593.49
  5. Step 5: Solve for x
    x = 10,679,696,593.49/126,456.08
  6. Step 6: Final answer
    x = 84,453.80

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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.