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Finding the Fourth Proportional to 128,079.50, 192,120.33 and 44,973.50

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Solution

The fourth proportional to 128,079.50, 192,120.33 and 44,973.50 is: 67,460.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,079.50 : 192,120.33 = 44,973.50 : x
  2. Step 2: Convert to fraction form
    128,079.50/192,120.33 = 44,973.50/x
  3. Step 3: Cross multiply
    128,079.50x = 192,120.33 × 44,973.50
  4. Step 4: Simplify right side
    128,079.50x = 8,640,323,661.26
  5. Step 5: Solve for x
    x = 8,640,323,661.26/128,079.50
  6. Step 6: Final answer
    x = 67,460.63

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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.