Home / 159,795.20-239,692.80-85,145.60

Finding the Fourth Proportional to 159,795.20, 239,692.80 and 85,145.60

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Solution

The fourth proportional to 159,795.20, 239,692.80 and 85,145.60 is: 127,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,795.20 : 239,692.80 = 85,145.60 : x
  2. Step 2: Convert to fraction form
    159,795.20/239,692.80 = 85,145.60/x
  3. Step 3: Cross multiply
    159,795.20x = 239,692.80 × 85,145.60
  4. Step 4: Simplify right side
    159,795.20x = 20,408,787,271.68
  5. Step 5: Solve for x
    x = 20,408,787,271.68/159,795.20
  6. Step 6: Final answer
    x = 127,718.40

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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.