Home / 128,945.28-193,392-35,438.88

Finding the Fourth Proportional to 128,945.28, 193,392 and 35,438.88

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Solution

The fourth proportional to 128,945.28, 193,392 and 35,438.88 is: 53,151.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,945.28 : 193,392 = 35,438.88 : x
  2. Step 2: Convert to fraction form
    128,945.28/193,392 = 35,438.88/x
  3. Step 3: Cross multiply
    128,945.28x = 193,392 × 35,438.88
  4. Step 4: Simplify right side
    128,945.28x = 6,853,595,880.96
  5. Step 5: Solve for x
    x = 6,853,595,880.96/128,945.28
  6. Step 6: Final answer
    x = 53,151.20

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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.