Home / 128,630.08-192,069.52-113,511.04

Finding the Fourth Proportional to 128,630.08, 192,069.52 and 113,511.04

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Solution

The fourth proportional to 128,630.08, 192,069.52 and 113,511.04 is: 169,493.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,630.08 : 192,069.52 = 113,511.04 : x
  2. Step 2: Convert to fraction form
    128,630.08/192,069.52 = 113,511.04/x
  3. Step 3: Cross multiply
    128,630.08x = 192,069.52 × 113,511.04
  4. Step 4: Simplify right side
    128,630.08x = 21,802,010,967.50
  5. Step 5: Solve for x
    x = 21,802,010,967.50/128,630.08
  6. Step 6: Final answer
    x = 169,493.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.