Home / 139,135.02-192,011.04-81,773.52

Finding the Fourth Proportional to 139,135.02, 192,011.04 and 81,773.52

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Solution

The fourth proportional to 139,135.02, 192,011.04 and 81,773.52 is: 112,850.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,135.02 : 192,011.04 = 81,773.52 : x
  2. Step 2: Convert to fraction form
    139,135.02/192,011.04 = 81,773.52/x
  3. Step 3: Cross multiply
    139,135.02x = 192,011.04 × 81,773.52
  4. Step 4: Simplify right side
    139,135.02x = 15,701,418,619.66
  5. Step 5: Solve for x
    x = 15,701,418,619.66/139,135.02
  6. Step 6: Final answer
    x = 112,850.23

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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.