Home / 139,830.58-192,969.18-76,168.24

Finding the Fourth Proportional to 139,830.58, 192,969.18 and 76,168.24

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Solution

The fourth proportional to 139,830.58, 192,969.18 and 76,168.24 is: 105,113.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,830.58 : 192,969.18 = 76,168.24 : x
  2. Step 2: Convert to fraction form
    139,830.58/192,969.18 = 76,168.24/x
  3. Step 3: Cross multiply
    139,830.58x = 192,969.18 × 76,168.24
  4. Step 4: Simplify right side
    139,830.58x = 14,698,122,814.84
  5. Step 5: Solve for x
    x = 14,698,122,814.84/139,830.58
  6. Step 6: Final answer
    x = 105,113.79

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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.