Home / 113,760.90-170,969.40-99,326.70

Finding the Fourth Proportional to 113,760.90, 170,969.40 and 99,326.70

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Solution

The fourth proportional to 113,760.90, 170,969.40 and 99,326.70 is: 149,276.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,760.90 : 170,969.40 = 99,326.70 : x
  2. Step 2: Convert to fraction form
    113,760.90/170,969.40 = 99,326.70/x
  3. Step 3: Cross multiply
    113,760.90x = 170,969.40 × 99,326.70
  4. Step 4: Simplify right side
    113,760.90x = 16,981,826,302.98
  5. Step 5: Solve for x
    x = 16,981,826,302.98/113,760.90
  6. Step 6: Final answer
    x = 149,276.48

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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.