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Finding the Fourth Proportional to 123,040.80, 184,561.20 and 70,455.60

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Solution

The fourth proportional to 123,040.80, 184,561.20 and 70,455.60 is: 105,683.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,040.80 : 184,561.20 = 70,455.60 : x
  2. Step 2: Convert to fraction form
    123,040.80/184,561.20 = 70,455.60/x
  3. Step 3: Cross multiply
    123,040.80x = 184,561.20 × 70,455.60
  4. Step 4: Simplify right side
    123,040.80x = 13,003,370,082.72
  5. Step 5: Solve for x
    x = 13,003,370,082.72/123,040.80
  6. Step 6: Final answer
    x = 105,683.40

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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.