Home / 139,329.16-192,271.62-78,898.84

Finding the Fourth Proportional to 139,329.16, 192,271.62 and 78,898.84

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Solution

The fourth proportional to 139,329.16, 192,271.62 and 78,898.84 is: 108,878.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,329.16 : 192,271.62 = 78,898.84 : x
  2. Step 2: Convert to fraction form
    139,329.16/192,271.62 = 78,898.84/x
  3. Step 3: Cross multiply
    139,329.16x = 192,271.62 × 78,898.84
  4. Step 4: Simplify right side
    139,329.16x = 15,170,007,782.92
  5. Step 5: Solve for x
    x = 15,170,007,782.92/139,329.16
  6. Step 6: Final answer
    x = 108,878.92

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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.