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Finding the Fourth Proportional to 128,022.60, 192,033.90 and 88,656.60

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Solution

The fourth proportional to 128,022.60, 192,033.90 and 88,656.60 is: 132,984.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,022.60 : 192,033.90 = 88,656.60 : x
  2. Step 2: Convert to fraction form
    128,022.60/192,033.90 = 88,656.60/x
  3. Step 3: Cross multiply
    128,022.60x = 192,033.90 × 88,656.60
  4. Step 4: Simplify right side
    128,022.60x = 17,025,072,658.74
  5. Step 5: Solve for x
    x = 17,025,072,658.74/128,022.60
  6. Step 6: Final answer
    x = 132,984.90

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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.