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Finding the Fourth Proportional to 128,920.24, 193,333.86 and 44,657.56

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Solution

The fourth proportional to 128,920.24, 193,333.86 and 44,657.56 is: 66,970.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,920.24 : 193,333.86 = 44,657.56 : x
  2. Step 2: Convert to fraction form
    128,920.24/193,333.86 = 44,657.56/x
  3. Step 3: Cross multiply
    128,920.24x = 193,333.86 × 44,657.56
  4. Step 4: Simplify right side
    128,920.24x = 8,633,818,452.98
  5. Step 5: Solve for x
    x = 8,633,818,452.98/128,920.24
  6. Step 6: Final answer
    x = 66,970.23

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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.