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Finding the Fourth Proportional to 118,959.90, 164,078.60 and 101,026.50

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Solution

The fourth proportional to 118,959.90, 164,078.60 and 101,026.50 is: 139,343.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,959.90 : 164,078.60 = 101,026.50 : x
  2. Step 2: Convert to fraction form
    118,959.90/164,078.60 = 101,026.50/x
  3. Step 3: Cross multiply
    118,959.90x = 164,078.60 × 101,026.50
  4. Step 4: Simplify right side
    118,959.90x = 16,576,286,177.77
  5. Step 5: Solve for x
    x = 16,576,286,177.77/118,959.90
  6. Step 6: Final answer
    x = 139,343.48

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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.