Home / 109,289.20-163,836.60-64,868.80

Finding the Fourth Proportional to 109,289.20, 163,836.60 and 64,868.80

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Solution

The fourth proportional to 109,289.20, 163,836.60 and 64,868.80 is: 97,245.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,289.20 : 163,836.60 = 64,868.80 : x
  2. Step 2: Convert to fraction form
    109,289.20/163,836.60 = 64,868.80/x
  3. Step 3: Cross multiply
    109,289.20x = 163,836.60 × 64,868.80
  4. Step 4: Simplify right side
    109,289.20x = 10,627,883,638.08
  5. Step 5: Solve for x
    x = 10,627,883,638.08/109,289.20
  6. Step 6: Final answer
    x = 97,245.51

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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.