Home / 128,223.45-192,274.77-74,930.82

Finding the Fourth Proportional to 128,223.45, 192,274.77 and 74,930.82

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Solution

The fourth proportional to 128,223.45, 192,274.77 and 74,930.82 is: 112,360.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,223.45 : 192,274.77 = 74,930.82 : x
  2. Step 2: Convert to fraction form
    128,223.45/192,274.77 = 74,930.82/x
  3. Step 3: Cross multiply
    128,223.45x = 192,274.77 × 74,930.82
  4. Step 4: Simplify right side
    128,223.45x = 14,407,306,181.41
  5. Step 5: Solve for x
    x = 14,407,306,181.41/128,223.45
  6. Step 6: Final answer
    x = 112,360.93

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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.