Home / 128,740.85-193,063.78-44,479.38

Finding the Fourth Proportional to 128,740.85, 193,063.78 and 44,479.38

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Solution

The fourth proportional to 128,740.85, 193,063.78 and 44,479.38 is: 66,702.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,740.85 : 193,063.78 = 44,479.38 : x
  2. Step 2: Convert to fraction form
    128,740.85/193,063.78 = 44,479.38/x
  3. Step 3: Cross multiply
    128,740.85x = 193,063.78 × 44,479.38
  4. Step 4: Simplify right side
    128,740.85x = 8,587,357,234.86
  5. Step 5: Solve for x
    x = 8,587,357,234.86/128,740.85
  6. Step 6: Final answer
    x = 66,702.66

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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.