Home / 128,281.55-192,340.82-112,518.24

Finding the Fourth Proportional to 128,281.55, 192,340.82 and 112,518.24

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Solution

The fourth proportional to 128,281.55, 192,340.82 and 112,518.24 is: 168,705.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,281.55 : 192,340.82 = 112,518.24 : x
  2. Step 2: Convert to fraction form
    128,281.55/192,340.82 = 112,518.24/x
  3. Step 3: Cross multiply
    128,281.55x = 192,340.82 × 112,518.24
  4. Step 4: Simplify right side
    128,281.55x = 21,641,850,546.56
  5. Step 5: Solve for x
    x = 21,641,850,546.56/128,281.55
  6. Step 6: Final answer
    x = 168,705.87

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1.5x scale

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.