Home / 113,619.20-170,428.79-30,513.20

Finding the Fourth Proportional to 113,619.20, 170,428.79 and 30,513.20

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Solution

The fourth proportional to 113,619.20, 170,428.79 and 30,513.20 is: 45,769.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,619.20 : 170,428.79 = 30,513.20 : x
  2. Step 2: Convert to fraction form
    113,619.20/170,428.79 = 30,513.20/x
  3. Step 3: Cross multiply
    113,619.20x = 170,428.79 × 30,513.20
  4. Step 4: Simplify right side
    113,619.20x = 5,200,326,750.32
  5. Step 5: Solve for x
    x = 5,200,326,750.32/113,619.20
  6. Step 6: Final answer
    x = 45,769.79

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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.