Home / 139,890.58-193,048.85-76,228.36

Finding the Fourth Proportional to 139,890.58, 193,048.85 and 76,228.36

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Solution

The fourth proportional to 139,890.58, 193,048.85 and 76,228.36 is: 105,195.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,890.58 : 193,048.85 = 76,228.36 : x
  2. Step 2: Convert to fraction form
    139,890.58/193,048.85 = 76,228.36/x
  3. Step 3: Cross multiply
    139,890.58x = 193,048.85 × 76,228.36
  4. Step 4: Simplify right side
    139,890.58x = 14,715,796,943.33
  5. Step 5: Solve for x
    x = 14,715,796,943.33/139,890.58
  6. Step 6: Final answer
    x = 105,195.05

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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.