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Finding the Fourth Proportional to 128,077.26, 192,146.13 and 43,838.46

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Solution

The fourth proportional to 128,077.26, 192,146.13 and 43,838.46 is: 65,768.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,077.26 : 192,146.13 = 43,838.46 : x
  2. Step 2: Convert to fraction form
    128,077.26/192,146.13 = 43,838.46/x
  3. Step 3: Cross multiply
    128,077.26x = 192,146.13 × 43,838.46
  4. Step 4: Simplify right side
    128,077.26x = 8,423,390,434.16
  5. Step 5: Solve for x
    x = 8,423,390,434.16/128,077.26
  6. Step 6: Final answer
    x = 65,768.04

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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.