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Finding the Fourth Proportional to 123,220.80, 184,701.60 and 70,516.80

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Solution

The fourth proportional to 123,220.80, 184,701.60 and 70,516.80 is: 105,701.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,220.80 : 184,701.60 = 70,516.80 : x
  2. Step 2: Convert to fraction form
    123,220.80/184,701.60 = 70,516.80/x
  3. Step 3: Cross multiply
    123,220.80x = 184,701.60 × 70,516.80
  4. Step 4: Simplify right side
    123,220.80x = 13,024,565,786.88
  5. Step 5: Solve for x
    x = 13,024,565,786.88/123,220.80
  6. Step 6: Final answer
    x = 105,701.03

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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.