Home / 128,106.00-192,275.60-68,184.78

Finding the Fourth Proportional to 128,106.00, 192,275.60 and 68,184.78

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Solution

The fourth proportional to 128,106.00, 192,275.60 and 68,184.78 is: 102,339.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,106.00 : 192,275.60 = 68,184.78 : x
  2. Step 2: Convert to fraction form
    128,106.00/192,275.60 = 68,184.78/x
  3. Step 3: Cross multiply
    128,106.00x = 192,275.60 × 68,184.78
  4. Step 4: Simplify right side
    128,106.00x = 13,110,268,934.80
  5. Step 5: Solve for x
    x = 13,110,268,934.80/128,106.00
  6. Step 6: Final answer
    x = 102,339.23

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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.