Home / 128,954.79-193,507.47-54,069.21

Finding the Fourth Proportional to 128,954.79, 193,507.47 and 54,069.21

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Solution

The fourth proportional to 128,954.79, 193,507.47 and 54,069.21 is: 81,135.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,954.79 : 193,507.47 = 54,069.21 : x
  2. Step 2: Convert to fraction form
    128,954.79/193,507.47 = 54,069.21/x
  3. Step 3: Cross multiply
    128,954.79x = 193,507.47 × 54,069.21
  4. Step 4: Simplify right side
    128,954.79x = 10,462,796,032.00
  5. Step 5: Solve for x
    x = 10,462,796,032.00/128,954.79
  6. Step 6: Final answer
    x = 81,135.38

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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.