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Finding the Fourth Proportional to 139,848.97, 192,996.53 and 79,417.93

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Solution

The fourth proportional to 139,848.97, 192,996.53 and 79,417.93 is: 109,599.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,848.97 : 192,996.53 = 79,417.93 : x
  2. Step 2: Convert to fraction form
    139,848.97/192,996.53 = 79,417.93/x
  3. Step 3: Cross multiply
    139,848.97x = 192,996.53 × 79,417.93
  4. Step 4: Simplify right side
    139,848.97x = 15,327,384,143.35
  5. Step 5: Solve for x
    x = 15,327,384,143.35/139,848.97
  6. Step 6: Final answer
    x = 109,599.55

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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.