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Finding the Fourth Proportional to 243,564.96, 336,112.80 and 136,135.68

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Solution

The fourth proportional to 243,564.96, 336,112.80 and 136,135.68 is: 187,863.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,564.96 : 336,112.80 = 136,135.68 : x
  2. Step 2: Convert to fraction form
    243,564.96/336,112.80 = 136,135.68/x
  3. Step 3: Cross multiply
    243,564.96x = 336,112.80 × 136,135.68
  4. Step 4: Simplify right side
    243,564.96x = 45,756,944,584.70
  5. Step 5: Solve for x
    x = 45,756,944,584.70/243,564.96
  6. Step 6: Final answer
    x = 187,863.41

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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.