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Finding the Fourth Proportional to 117,189.38, 161,721.36 and 63,474.23

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Solution

The fourth proportional to 117,189.38, 161,721.36 and 63,474.23 is: 87,594.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,189.38 : 161,721.36 = 63,474.23 : x
  2. Step 2: Convert to fraction form
    117,189.38/161,721.36 = 63,474.23/x
  3. Step 3: Cross multiply
    117,189.38x = 161,721.36 × 63,474.23
  4. Step 4: Simplify right side
    117,189.38x = 10,265,139,204.86
  5. Step 5: Solve for x
    x = 10,265,139,204.86/117,189.38
  6. Step 6: Final answer
    x = 87,594.45

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1.5x scale

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.