Home / 139,787.42-192,908.85-76,125.17

Finding the Fourth Proportional to 139,787.42, 192,908.85 and 76,125.17

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Solution

The fourth proportional to 139,787.42, 192,908.85 and 76,125.17 is: 105,053.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,787.42 : 192,908.85 = 76,125.17 : x
  2. Step 2: Convert to fraction form
    139,787.42/192,908.85 = 76,125.17/x
  3. Step 3: Cross multiply
    139,787.42x = 192,908.85 × 76,125.17
  4. Step 4: Simplify right side
    139,787.42x = 14,685,218,036.21
  5. Step 5: Solve for x
    x = 14,685,218,036.21/139,787.42
  6. Step 6: Final answer
    x = 105,053.94

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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.