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Finding the Fourth Proportional to 128,036.42, 192,054.66 and 43,797.39

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Solution

The fourth proportional to 128,036.42, 192,054.66 and 43,797.39 is: 65,696.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,036.42 : 192,054.66 = 43,797.39 : x
  2. Step 2: Convert to fraction form
    128,036.42/192,054.66 = 43,797.39/x
  3. Step 3: Cross multiply
    128,036.42x = 192,054.66 × 43,797.39
  4. Step 4: Simplify right side
    128,036.42x = 8,411,492,845.34
  5. Step 5: Solve for x
    x = 8,411,492,845.34/128,036.42
  6. Step 6: Final answer
    x = 65,696.10

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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.