Home / 100,516.61-138,702.71-60,229.37

Finding the Fourth Proportional to 100,516.61, 138,702.71 and 60,229.37

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Solution

The fourth proportional to 100,516.61, 138,702.71 and 60,229.37 is: 83,110.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,516.61 : 138,702.71 = 60,229.37 : x
  2. Step 2: Convert to fraction form
    100,516.61/138,702.71 = 60,229.37/x
  3. Step 3: Cross multiply
    100,516.61x = 138,702.71 × 60,229.37
  4. Step 4: Simplify right side
    100,516.61x = 8,353,977,337.92
  5. Step 5: Solve for x
    x = 8,353,977,337.92/100,516.61
  6. Step 6: Final answer
    x = 83,110.41

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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.