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Finding the Fourth Proportional to 128,890.16, 193,289.11 and 44,627.71

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Solution

The fourth proportional to 128,890.16, 193,289.11 and 44,627.71 is: 66,925.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,890.16 : 193,289.11 = 44,627.71 : x
  2. Step 2: Convert to fraction form
    128,890.16/193,289.11 = 44,627.71/x
  3. Step 3: Cross multiply
    128,890.16x = 193,289.11 × 44,627.71
  4. Step 4: Simplify right side
    128,890.16x = 8,626,050,240.38
  5. Step 5: Solve for x
    x = 8,626,050,240.38/128,890.16
  6. Step 6: Final answer
    x = 66,925.59

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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.