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Finding the Fourth Proportional to 120,005.80, 179,922.30 and 67,431.40

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Solution

The fourth proportional to 120,005.80, 179,922.30 and 67,431.40 is: 101,098.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,005.80 : 179,922.30 = 67,431.40 : x
  2. Step 2: Convert to fraction form
    120,005.80/179,922.30 = 67,431.40/x
  3. Step 3: Cross multiply
    120,005.80x = 179,922.30 × 67,431.40
  4. Step 4: Simplify right side
    120,005.80x = 12,132,412,580.22
  5. Step 5: Solve for x
    x = 12,132,412,580.22/120,005.80
  6. Step 6: Final answer
    x = 101,098.55

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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.