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Finding the Fourth Proportional to 147,638.75, 203,741.48 and 80,570.75

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Solution

The fourth proportional to 147,638.75, 203,741.48 and 80,570.75 is: 111,187.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,638.75 : 203,741.48 = 80,570.75 : x
  2. Step 2: Convert to fraction form
    147,638.75/203,741.48 = 80,570.75/x
  3. Step 3: Cross multiply
    147,638.75x = 203,741.48 × 80,570.75
  4. Step 4: Simplify right side
    147,638.75x = 16,415,603,446.86
  5. Step 5: Solve for x
    x = 16,415,603,446.86/147,638.75
  6. Step 6: Final answer
    x = 111,187.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.