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Finding the Fourth Proportional to 197,012.89, 295,638.86 and 78,674.32

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Solution

The fourth proportional to 197,012.89, 295,638.86 and 78,674.32 is: 118,059.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,012.89 : 295,638.86 = 78,674.32 : x
  2. Step 2: Convert to fraction form
    197,012.89/295,638.86 = 78,674.32/x
  3. Step 3: Cross multiply
    197,012.89x = 295,638.86 × 78,674.32
  4. Step 4: Simplify right side
    197,012.89x = 23,259,186,276.08
  5. Step 5: Solve for x
    x = 23,259,186,276.08/197,012.89
  6. Step 6: Final answer
    x = 118,059.21

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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.