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Finding the Fourth Proportional to 128,879.30, 193,332.02 and 44,639.30

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Solution

The fourth proportional to 128,879.30, 193,332.02 and 44,639.30 is: 66,963.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,879.30 : 193,332.02 = 44,639.30 : x
  2. Step 2: Convert to fraction form
    128,879.30/193,332.02 = 44,639.30/x
  3. Step 3: Cross multiply
    128,879.30x = 193,332.02 × 44,639.30
  4. Step 4: Simplify right side
    128,879.30x = 8,630,206,300.52
  5. Step 5: Solve for x
    x = 8,630,206,300.52/128,879.30
  6. Step 6: Final answer
    x = 66,963.48

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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.