Home / 128,911.50-193,442.52-54,025.44

Finding the Fourth Proportional to 128,911.50, 193,442.52 and 54,025.44

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Solution

The fourth proportional to 128,911.50, 193,442.52 and 54,025.44 is: 81,069.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,911.50 : 193,442.52 = 54,025.44 : x
  2. Step 2: Convert to fraction form
    128,911.50/193,442.52 = 54,025.44/x
  3. Step 3: Cross multiply
    128,911.50x = 193,442.52 × 54,025.44
  4. Step 4: Simplify right side
    128,911.50x = 10,450,817,257.71
  5. Step 5: Solve for x
    x = 10,450,817,257.71/128,911.50
  6. Step 6: Final answer
    x = 81,069.70

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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.