Home / 128,435.60-192,653.40-101,997.20

Finding the Fourth Proportional to 128,435.60, 192,653.40 and 101,997.20

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Solution

The fourth proportional to 128,435.60, 192,653.40 and 101,997.20 is: 152,995.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,435.60 : 192,653.40 = 101,997.20 : x
  2. Step 2: Convert to fraction form
    128,435.60/192,653.40 = 101,997.20/x
  3. Step 3: Cross multiply
    128,435.60x = 192,653.40 × 101,997.20
  4. Step 4: Simplify right side
    128,435.60x = 19,650,107,370.48
  5. Step 5: Solve for x
    x = 19,650,107,370.48/128,435.60
  6. Step 6: Final answer
    x = 152,995.80

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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.