Home / 113,540.80-170,416.32-57,420.64

Finding the Fourth Proportional to 113,540.80, 170,416.32 and 57,420.64

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Solution

The fourth proportional to 113,540.80, 170,416.32 and 57,420.64 is: 86,184.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,540.80 : 170,416.32 = 57,420.64 : x
  2. Step 2: Convert to fraction form
    113,540.80/170,416.32 = 57,420.64/x
  3. Step 3: Cross multiply
    113,540.80x = 170,416.32 × 57,420.64
  4. Step 4: Simplify right side
    113,540.80x = 9,785,414,160.84
  5. Step 5: Solve for x
    x = 9,785,414,160.84/113,540.80
  6. Step 6: Final answer
    x = 86,184.12

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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.