Home / 99,930.69-137,840.94-76,004.91

Finding the Fourth Proportional to 99,930.69, 137,840.94 and 76,004.91

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Solution

The fourth proportional to 99,930.69, 137,840.94 and 76,004.91 is: 104,838.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,930.69 : 137,840.94 = 76,004.91 : x
  2. Step 2: Convert to fraction form
    99,930.69/137,840.94 = 76,004.91/x
  3. Step 3: Cross multiply
    99,930.69x = 137,840.94 × 76,004.91
  4. Step 4: Simplify right side
    99,930.69x = 10,476,588,239.02
  5. Step 5: Solve for x
    x = 10,476,588,239.02/99,930.69
  6. Step 6: Final answer
    x = 104,838.55

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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.