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Finding the Fourth Proportional to 163,462.86, 225,679.38 and 129,608.10

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Solution

The fourth proportional to 163,462.86, 225,679.38 and 129,608.10 is: 178,938.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,462.86 : 225,679.38 = 129,608.10 : x
  2. Step 2: Convert to fraction form
    163,462.86/225,679.38 = 129,608.10/x
  3. Step 3: Cross multiply
    163,462.86x = 225,679.38 × 129,608.10
  4. Step 4: Simplify right side
    163,462.86x = 29,249,875,650.98
  5. Step 5: Solve for x
    x = 29,249,875,650.98/163,462.86
  6. Step 6: Final answer
    x = 178,938.97

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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.