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Finding the Fourth Proportional to 159,534.44, 220,147.12 and 87,914.45

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Solution

The fourth proportional to 159,534.44, 220,147.12 and 87,914.45 is: 121,316.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,534.44 : 220,147.12 = 87,914.45 : x
  2. Step 2: Convert to fraction form
    159,534.44/220,147.12 = 87,914.45/x
  3. Step 3: Cross multiply
    159,534.44x = 220,147.12 × 87,914.45
  4. Step 4: Simplify right side
    159,534.44x = 19,354,111,433.58
  5. Step 5: Solve for x
    x = 19,354,111,433.58/159,534.44
  6. Step 6: Final answer
    x = 121,316.20

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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.