Home / 124,309.49-171,502.12-81,313.50

Finding the Fourth Proportional to 124,309.49, 171,502.12 and 81,313.50

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Solution

The fourth proportional to 124,309.49, 171,502.12 and 81,313.50 is: 112,183.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,309.49 : 171,502.12 = 81,313.50 : x
  2. Step 2: Convert to fraction form
    124,309.49/171,502.12 = 81,313.50/x
  3. Step 3: Cross multiply
    124,309.49x = 171,502.12 × 81,313.50
  4. Step 4: Simplify right side
    124,309.49x = 13,945,438,150.70
  5. Step 5: Solve for x
    x = 13,945,438,150.70/124,309.49
  6. Step 6: Final answer
    x = 112,183.21

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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.