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Finding the Fourth Proportional to 192,688.64, 265,892.31 and 115,148.90

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Solution

The fourth proportional to 192,688.64, 265,892.31 and 115,148.90 is: 158,894.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,688.64 : 265,892.31 = 115,148.90 : x
  2. Step 2: Convert to fraction form
    192,688.64/265,892.31 = 115,148.90/x
  3. Step 3: Cross multiply
    192,688.64x = 265,892.31 × 115,148.90
  4. Step 4: Simplify right side
    192,688.64x = 30,617,207,050.37
  5. Step 5: Solve for x
    x = 30,617,207,050.37/192,688.64
  6. Step 6: Final answer
    x = 158,894.72

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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.