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Finding the Fourth Proportional to 192,653.87, 265,850.10 and 105,421.28

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Solution

The fourth proportional to 192,653.87, 265,850.10 and 105,421.28 is: 145,474.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,653.87 : 265,850.10 = 105,421.28 : x
  2. Step 2: Convert to fraction form
    192,653.87/265,850.10 = 105,421.28/x
  3. Step 3: Cross multiply
    192,653.87x = 265,850.10 × 105,421.28
  4. Step 4: Simplify right side
    192,653.87x = 28,026,256,500.88
  5. Step 5: Solve for x
    x = 28,026,256,500.88/192,653.87
  6. Step 6: Final answer
    x = 145,474.67

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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.