Home / 105,059.11-144,982-57,313.46

Finding the Fourth Proportional to 105,059.11, 144,982 and 57,313.46

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Solution

The fourth proportional to 105,059.11, 144,982 and 57,313.46 is: 79,092.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,059.11 : 144,982 = 57,313.46 : x
  2. Step 2: Convert to fraction form
    105,059.11/144,982 = 57,313.46/x
  3. Step 3: Cross multiply
    105,059.11x = 144,982 × 57,313.46
  4. Step 4: Simplify right side
    105,059.11x = 8,309,420,057.72
  5. Step 5: Solve for x
    x = 8,309,420,057.72/105,059.11
  6. Step 6: Final answer
    x = 79,092.81

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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.