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Finding the Fourth Proportional to 128,776.61, 193,173.57 and 44,544.91

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Solution

The fourth proportional to 128,776.61, 193,173.57 and 44,544.91 is: 66,820.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,776.61 : 193,173.57 = 44,544.91 : x
  2. Step 2: Convert to fraction form
    128,776.61/193,173.57 = 44,544.91/x
  3. Step 3: Cross multiply
    128,776.61x = 193,173.57 × 44,544.91
  4. Step 4: Simplify right side
    128,776.61x = 8,604,899,290.03
  5. Step 5: Solve for x
    x = 8,604,899,290.03/128,776.61
  6. Step 6: Final answer
    x = 66,820.36

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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.