Home / 128,106.74-192,276.73-68,185.53

Finding the Fourth Proportional to 128,106.74, 192,276.73 and 68,185.53

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Solution

The fourth proportional to 128,106.74, 192,276.73 and 68,185.53 is: 102,340.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,106.74 : 192,276.73 = 68,185.53 : x
  2. Step 2: Convert to fraction form
    128,106.74/192,276.73 = 68,185.53/x
  3. Step 3: Cross multiply
    128,106.74x = 192,276.73 × 68,185.53
  4. Step 4: Simplify right side
    128,106.74x = 13,110,490,826.95
  5. Step 5: Solve for x
    x = 13,110,490,826.95/128,106.74
  6. Step 6: Final answer
    x = 102,340.37

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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.