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Finding the Fourth Proportional to 124,457.68, 186,666 and 53,391.79

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Solution

The fourth proportional to 124,457.68, 186,666 and 53,391.79 is: 80,078.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,457.68 : 186,666 = 53,391.79 : x
  2. Step 2: Convert to fraction form
    124,457.68/186,666 = 53,391.79/x
  3. Step 3: Cross multiply
    124,457.68x = 186,666 × 53,391.79
  4. Step 4: Simplify right side
    124,457.68x = 9,966,431,872.14
  5. Step 5: Solve for x
    x = 9,966,431,872.14/124,457.68
  6. Step 6: Final answer
    x = 80,078.88

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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.