Home / 128,994.91-193,485.53-40,238.24

Finding the Fourth Proportional to 128,994.91, 193,485.53 and 40,238.24

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Solution

The fourth proportional to 128,994.91, 193,485.53 and 40,238.24 is: 60,355.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,994.91 : 193,485.53 = 40,238.24 : x
  2. Step 2: Convert to fraction form
    128,994.91/193,485.53 = 40,238.24/x
  3. Step 3: Cross multiply
    128,994.91x = 193,485.53 × 40,238.24
  4. Step 4: Simplify right side
    128,994.91x = 7,785,516,991.48
  5. Step 5: Solve for x
    x = 7,785,516,991.48/128,994.91
  6. Step 6: Final answer
    x = 60,355.23

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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.