Home / 139,907.58-193,072.71-76,245.36

Finding the Fourth Proportional to 139,907.58, 193,072.71 and 76,245.36

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Solution

The fourth proportional to 139,907.58, 193,072.71 and 76,245.36 is: 105,218.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,907.58 : 193,072.71 = 76,245.36 : x
  2. Step 2: Convert to fraction form
    139,907.58/193,072.71 = 76,245.36/x
  3. Step 3: Cross multiply
    139,907.58x = 193,072.71 × 76,245.36
  4. Step 4: Simplify right side
    139,907.58x = 14,720,898,280.13
  5. Step 5: Solve for x
    x = 14,720,898,280.13/139,907.58
  6. Step 6: Final answer
    x = 105,218.73

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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.