Home / 109,365.20-164,112.60-72,032.30

Finding the Fourth Proportional to 109,365.20, 164,112.60 and 72,032.30

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Solution

The fourth proportional to 109,365.20, 164,112.60 and 72,032.30 is: 108,091.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,365.20 : 164,112.60 = 72,032.30 : x
  2. Step 2: Convert to fraction form
    109,365.20/164,112.60 = 72,032.30/x
  3. Step 3: Cross multiply
    109,365.20x = 164,112.60 × 72,032.30
  4. Step 4: Simplify right side
    109,365.20x = 11,821,408,036.98
  5. Step 5: Solve for x
    x = 11,821,408,036.98/109,365.20
  6. Step 6: Final answer
    x = 108,091.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.