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Finding the Fourth Proportional to 138,457.86, 207,555.48 and 44,898

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Solution

The fourth proportional to 138,457.86, 207,555.48 and 44,898 is: 67,304.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,457.86 : 207,555.48 = 44,898 : x
  2. Step 2: Convert to fraction form
    138,457.86/207,555.48 = 44,898/x
  3. Step 3: Cross multiply
    138,457.86x = 207,555.48 × 44,898
  4. Step 4: Simplify right side
    138,457.86x = 9,318,825,941.04
  5. Step 5: Solve for x
    x = 9,318,825,941.04/138,457.86
  6. Step 6: Final answer
    x = 67,304.42

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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.