Home / 113,639.90-170,265.72-80,295.44

Finding the Fourth Proportional to 113,639.90, 170,265.72 and 80,295.44

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Solution

The fourth proportional to 113,639.90, 170,265.72 and 80,295.44 is: 120,305.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,639.90 : 170,265.72 = 80,295.44 : x
  2. Step 2: Convert to fraction form
    113,639.90/170,265.72 = 80,295.44/x
  3. Step 3: Cross multiply
    113,639.90x = 170,265.72 × 80,295.44
  4. Step 4: Simplify right side
    113,639.90x = 13,671,560,904.32
  5. Step 5: Solve for x
    x = 13,671,560,904.32/113,639.90
  6. Step 6: Final answer
    x = 120,305.99

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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.