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Finding the Fourth Proportional to 128,880.30, 193,333.52 and 44,640.30

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Solution

The fourth proportional to 128,880.30, 193,333.52 and 44,640.30 is: 66,964.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,880.30 : 193,333.52 = 44,640.30 : x
  2. Step 2: Convert to fraction form
    128,880.30/193,333.52 = 44,640.30/x
  3. Step 3: Cross multiply
    128,880.30x = 193,333.52 × 44,640.30
  4. Step 4: Simplify right side
    128,880.30x = 8,630,466,332.86
  5. Step 5: Solve for x
    x = 8,630,466,332.86/128,880.30
  6. Step 6: Final answer
    x = 66,964.98

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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.