Home / 139,739.08-192,838.76-76,076.74

Finding the Fourth Proportional to 139,739.08, 192,838.76 and 76,076.74

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Solution

The fourth proportional to 139,739.08, 192,838.76 and 76,076.74 is: 104,985.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,739.08 : 192,838.76 = 76,076.74 : x
  2. Step 2: Convert to fraction form
    139,739.08/192,838.76 = 76,076.74/x
  3. Step 3: Cross multiply
    139,739.08x = 192,838.76 × 76,076.74
  4. Step 4: Simplify right side
    139,739.08x = 14,670,544,206.44
  5. Step 5: Solve for x
    x = 14,670,544,206.44/139,739.08
  6. Step 6: Final answer
    x = 104,985.26

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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.