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Finding the Fourth Proportional to 120,319.01, 180,655.91 and 67,114.93

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Solution

The fourth proportional to 120,319.01, 180,655.91 and 67,114.93 is: 100,771.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,319.01 : 180,655.91 = 67,114.93 : x
  2. Step 2: Convert to fraction form
    120,319.01/180,655.91 = 67,114.93/x
  3. Step 3: Cross multiply
    120,319.01x = 180,655.91 × 67,114.93
  4. Step 4: Simplify right side
    120,319.01x = 12,124,708,469.88
  5. Step 5: Solve for x
    x = 12,124,708,469.88/120,319.01
  6. Step 6: Final answer
    x = 100,771.35

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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.