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Finding the Fourth Proportional to 113,201.54, 156,062 and 90,309.04

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Solution

The fourth proportional to 113,201.54, 156,062 and 90,309.04 is: 124,501.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,201.54 : 156,062 = 90,309.04 : x
  2. Step 2: Convert to fraction form
    113,201.54/156,062 = 90,309.04/x
  3. Step 3: Cross multiply
    113,201.54x = 156,062 × 90,309.04
  4. Step 4: Simplify right side
    113,201.54x = 14,093,809,400.48
  5. Step 5: Solve for x
    x = 14,093,809,400.48/113,201.54
  6. Step 6: Final answer
    x = 124,501.92

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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.