Home / 113,891.20-170,836.80-112,141.60

Finding the Fourth Proportional to 113,891.20, 170,836.80 and 112,141.60

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Solution

The fourth proportional to 113,891.20, 170,836.80 and 112,141.60 is: 168,212.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,891.20 : 170,836.80 = 112,141.60 : x
  2. Step 2: Convert to fraction form
    113,891.20/170,836.80 = 112,141.60/x
  3. Step 3: Cross multiply
    113,891.20x = 170,836.80 × 112,141.60
  4. Step 4: Simplify right side
    113,891.20x = 19,157,912,090.88
  5. Step 5: Solve for x
    x = 19,157,912,090.88/113,891.20
  6. Step 6: Final answer
    x = 168,212.40

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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.