Home / 128,637.20-192,883.56-88,156.40

Finding the Fourth Proportional to 128,637.20, 192,883.56 and 88,156.40

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Solution

The fourth proportional to 128,637.20, 192,883.56 and 88,156.40 is: 132,185.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,637.20 : 192,883.56 = 88,156.40 : x
  2. Step 2: Convert to fraction form
    128,637.20/192,883.56 = 88,156.40/x
  3. Step 3: Cross multiply
    128,637.20x = 192,883.56 × 88,156.40
  4. Step 4: Simplify right side
    128,637.20x = 17,003,920,268.78
  5. Step 5: Solve for x
    x = 17,003,920,268.78/128,637.20
  6. Step 6: Final answer
    x = 132,185.09

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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.