Home / 128,913.50-193,445.52-54,027.44

Finding the Fourth Proportional to 128,913.50, 193,445.52 and 54,027.44

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Solution

The fourth proportional to 128,913.50, 193,445.52 and 54,027.44 is: 81,072.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,913.50 : 193,445.52 = 54,027.44 : x
  2. Step 2: Convert to fraction form
    128,913.50/193,445.52 = 54,027.44/x
  3. Step 3: Cross multiply
    128,913.50x = 193,445.52 × 54,027.44
  4. Step 4: Simplify right side
    128,913.50x = 10,451,366,225.07
  5. Step 5: Solve for x
    x = 10,451,366,225.07/128,913.50
  6. Step 6: Final answer
    x = 81,072.71

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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.