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Finding the Fourth Proportional to 126,159.81, 174,109.13 and 73,167.81

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Solution

The fourth proportional to 126,159.81, 174,109.13 and 73,167.81 is: 100,976.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,159.81 : 174,109.13 = 73,167.81 : x
  2. Step 2: Convert to fraction form
    126,159.81/174,109.13 = 73,167.81/x
  3. Step 3: Cross multiply
    126,159.81x = 174,109.13 × 73,167.81
  4. Step 4: Simplify right side
    126,159.81x = 12,739,183,055.48
  5. Step 5: Solve for x
    x = 12,739,183,055.48/126,159.81
  6. Step 6: Final answer
    x = 100,976.56

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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.