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Finding the Fourth Proportional to 159,649.76, 220,348.62 and 91,713.33

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Solution

The fourth proportional to 159,649.76, 220,348.62 and 91,713.33 is: 126,582.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,649.76 : 220,348.62 = 91,713.33 : x
  2. Step 2: Convert to fraction form
    159,649.76/220,348.62 = 91,713.33/x
  3. Step 3: Cross multiply
    159,649.76x = 220,348.62 × 91,713.33
  4. Step 4: Simplify right side
    159,649.76x = 20,208,905,701.10
  5. Step 5: Solve for x
    x = 20,208,905,701.10/159,649.76
  6. Step 6: Final answer
    x = 126,582.75

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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.