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Finding the Fourth Proportional to 128,873.80, 193,313.94 and 50,005.72

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Solution

The fourth proportional to 128,873.80, 193,313.94 and 50,005.72 is: 75,009.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,873.80 : 193,313.94 = 50,005.72 : x
  2. Step 2: Convert to fraction form
    128,873.80/193,313.94 = 50,005.72/x
  3. Step 3: Cross multiply
    128,873.80x = 193,313.94 × 50,005.72
  4. Step 4: Simplify right side
    128,873.80x = 9,666,802,755.74
  5. Step 5: Solve for x
    x = 9,666,802,755.74/128,873.80
  6. Step 6: Final answer
    x = 75,009.84

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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.