Home / 128,300.88-192,417.60-38,322.24

Finding the Fourth Proportional to 128,300.88, 192,417.60 and 38,322.24

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Solution

The fourth proportional to 128,300.88, 192,417.60 and 38,322.24 is: 57,473.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,300.88 : 192,417.60 = 38,322.24 : x
  2. Step 2: Convert to fraction form
    128,300.88/192,417.60 = 38,322.24/x
  3. Step 3: Cross multiply
    128,300.88x = 192,417.60 × 38,322.24
  4. Step 4: Simplify right side
    128,300.88x = 7,373,873,447.42
  5. Step 5: Solve for x
    x = 7,373,873,447.42/128,300.88
  6. Step 6: Final answer
    x = 57,473.29

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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.