Home / 197,103.13-295,731.40-78,808.30

Finding the Fourth Proportional to 197,103.13, 295,731.40 and 78,808.30

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Solution

The fourth proportional to 197,103.13, 295,731.40 and 78,808.30 is: 118,243.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,103.13 : 295,731.40 = 78,808.30 : x
  2. Step 2: Convert to fraction form
    197,103.13/295,731.40 = 78,808.30/x
  3. Step 3: Cross multiply
    197,103.13x = 295,731.40 × 78,808.30
  4. Step 4: Simplify right side
    197,103.13x = 23,306,089,235.91
  5. Step 5: Solve for x
    x = 23,306,089,235.91/197,103.13
  6. Step 6: Final answer
    x = 118,243.12

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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.