Home / 128,953.75-193,431.87-38,997.17

Finding the Fourth Proportional to 128,953.75, 193,431.87 and 38,997.17

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Solution

The fourth proportional to 128,953.75, 193,431.87 and 38,997.17 is: 58,496.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,953.75 : 193,431.87 = 38,997.17 : x
  2. Step 2: Convert to fraction form
    128,953.75/193,431.87 = 38,997.17/x
  3. Step 3: Cross multiply
    128,953.75x = 193,431.87 × 38,997.17
  4. Step 4: Simplify right side
    128,953.75x = 7,543,295,322.82
  5. Step 5: Solve for x
    x = 7,543,295,322.82/128,953.75
  6. Step 6: Final answer
    x = 58,496.13

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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.