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Finding the Fourth Proportional to 136,395.54, 188,225.64 and 75,971.43

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Solution

The fourth proportional to 136,395.54, 188,225.64 and 75,971.43 is: 104,840.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,395.54 : 188,225.64 = 75,971.43 : x
  2. Step 2: Convert to fraction form
    136,395.54/188,225.64 = 75,971.43/x
  3. Step 3: Cross multiply
    136,395.54x = 188,225.64 × 75,971.43
  4. Step 4: Simplify right side
    136,395.54x = 14,299,771,033.47
  5. Step 5: Solve for x
    x = 14,299,771,033.47/136,395.54
  6. Step 6: Final answer
    x = 104,840.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.