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Finding the Fourth Proportional to 139,460.42, 192,455.64 and 75,798.06

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Solution

The fourth proportional to 139,460.42, 192,455.64 and 75,798.06 is: 104,601.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,460.42 : 192,455.64 = 75,798.06 : x
  2. Step 2: Convert to fraction form
    139,460.42/192,455.64 = 75,798.06/x
  3. Step 3: Cross multiply
    139,460.42x = 192,455.64 × 75,798.06
  4. Step 4: Simplify right side
    139,460.42x = 14,587,764,148.06
  5. Step 5: Solve for x
    x = 14,587,764,148.06/139,460.42
  6. Step 6: Final answer
    x = 104,601.47

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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.