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Finding the Fourth Proportional to 120,104.80, 179,638.80 and 101,442.40

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Solution

The fourth proportional to 120,104.80, 179,638.80 and 101,442.40 is: 151,725.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,104.80 : 179,638.80 = 101,442.40 : x
  2. Step 2: Convert to fraction form
    120,104.80/179,638.80 = 101,442.40/x
  3. Step 3: Cross multiply
    120,104.80x = 179,638.80 × 101,442.40
  4. Step 4: Simplify right side
    120,104.80x = 18,222,991,005.12
  5. Step 5: Solve for x
    x = 18,222,991,005.12/120,104.80
  6. Step 6: Final answer
    x = 151,725.75

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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.