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Finding the Fourth Proportional to 106,139.61, 146,483.02 and 79,235.39

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Solution

The fourth proportional to 106,139.61, 146,483.02 and 79,235.39 is: 109,352.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,139.61 : 146,483.02 = 79,235.39 : x
  2. Step 2: Convert to fraction form
    106,139.61/146,483.02 = 79,235.39/x
  3. Step 3: Cross multiply
    106,139.61x = 146,483.02 × 79,235.39
  4. Step 4: Simplify right side
    106,139.61x = 11,606,639,683.33
  5. Step 5: Solve for x
    x = 11,606,639,683.33/106,139.61
  6. Step 6: Final answer
    x = 109,352.58

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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.