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Finding the Fourth Proportional to 124,321.91, 186,537.99 and 65,143.51

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Solution

The fourth proportional to 124,321.91, 186,537.99 and 65,143.51 is: 97,744.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,321.91 : 186,537.99 = 65,143.51 : x
  2. Step 2: Convert to fraction form
    124,321.91/186,537.99 = 65,143.51/x
  3. Step 3: Cross multiply
    124,321.91x = 186,537.99 × 65,143.51
  4. Step 4: Simplify right side
    124,321.91x = 12,151,738,158.54
  5. Step 5: Solve for x
    x = 12,151,738,158.54/124,321.91
  6. Step 6: Final answer
    x = 97,744.14

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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.