Home / 113,770.20-170,849.70-74,501.40

Finding the Fourth Proportional to 113,770.20, 170,849.70 and 74,501.40

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Solution

The fourth proportional to 113,770.20, 170,849.70 and 74,501.40 is: 111,879.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,770.20 : 170,849.70 = 74,501.40 : x
  2. Step 2: Convert to fraction form
    113,770.20/170,849.70 = 74,501.40/x
  3. Step 3: Cross multiply
    113,770.20x = 170,849.70 × 74,501.40
  4. Step 4: Simplify right side
    113,770.20x = 12,728,541,839.58
  5. Step 5: Solve for x
    x = 12,728,541,839.58/113,770.20
  6. Step 6: Final answer
    x = 111,879.40

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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.