Home / 115,455.20-173,139.60-40,546.40

Finding the Fourth Proportional to 115,455.20, 173,139.60 and 40,546.40

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Solution

The fourth proportional to 115,455.20, 173,139.60 and 40,546.40 is: 60,804.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,455.20 : 173,139.60 = 40,546.40 : x
  2. Step 2: Convert to fraction form
    115,455.20/173,139.60 = 40,546.40/x
  3. Step 3: Cross multiply
    115,455.20x = 173,139.60 × 40,546.40
  4. Step 4: Simplify right side
    115,455.20x = 7,020,187,477.44
  5. Step 5: Solve for x
    x = 7,020,187,477.44/115,455.20
  6. Step 6: Final answer
    x = 60,804.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.