Home / 128,449.19-192,692.24-39,709.62

Finding the Fourth Proportional to 128,449.19, 192,692.24 and 39,709.62

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Solution

The fourth proportional to 128,449.19, 192,692.24 and 39,709.62 is: 59,570.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,449.19 : 192,692.24 = 39,709.62 : x
  2. Step 2: Convert to fraction form
    128,449.19/192,692.24 = 39,709.62/x
  3. Step 3: Cross multiply
    128,449.19x = 192,692.24 × 39,709.62
  4. Step 4: Simplify right side
    128,449.19x = 7,651,735,147.45
  5. Step 5: Solve for x
    x = 7,651,735,147.45/128,449.19
  6. Step 6: Final answer
    x = 59,570.13

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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.