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Finding the Fourth Proportional to 128,505.66, 192,771.56 and 44,254.84

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Solution

The fourth proportional to 128,505.66, 192,771.56 and 44,254.84 is: 66,386.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,505.66 : 192,771.56 = 44,254.84 : x
  2. Step 2: Convert to fraction form
    128,505.66/192,771.56 = 44,254.84/x
  3. Step 3: Cross multiply
    128,505.66x = 192,771.56 × 44,254.84
  4. Step 4: Simplify right side
    128,505.66x = 8,531,074,544.35
  5. Step 5: Solve for x
    x = 8,531,074,544.35/128,505.66
  6. Step 6: Final answer
    x = 66,386.76

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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.