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Finding the Fourth Proportional to 104,250.80, 156,145.80 and 80,692.40

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Solution

The fourth proportional to 104,250.80, 156,145.80 and 80,692.40 is: 120,860.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,250.80 : 156,145.80 = 80,692.40 : x
  2. Step 2: Convert to fraction form
    104,250.80/156,145.80 = 80,692.40/x
  3. Step 3: Cross multiply
    104,250.80x = 156,145.80 × 80,692.40
  4. Step 4: Simplify right side
    104,250.80x = 12,599,779,351.92
  5. Step 5: Solve for x
    x = 12,599,779,351.92/104,250.80
  6. Step 6: Final answer
    x = 120,860.27

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1.5x scale

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.