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Finding the Fourth Proportional to 139,463.52, 192,463.95 and 79,032.60

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Solution

The fourth proportional to 139,463.52, 192,463.95 and 79,032.60 is: 109,067.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,463.52 : 192,463.95 = 79,032.60 : x
  2. Step 2: Convert to fraction form
    139,463.52/192,463.95 = 79,032.60/x
  3. Step 3: Cross multiply
    139,463.52x = 192,463.95 × 79,032.60
  4. Step 4: Simplify right side
    139,463.52x = 15,210,926,374.77
  5. Step 5: Solve for x
    x = 15,210,926,374.77/139,463.52
  6. Step 6: Final answer
    x = 109,067.42

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1.5x scale

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.