Home / 666,739.80-1,000,109.70-168,103.80

Finding the Fourth Proportional to 666,739.80, 1,000,109.70 and 168,103.80

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Solution

The fourth proportional to 666,739.80, 1,000,109.70 and 168,103.80 is: 252,155.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,739.80 : 1,000,109.70 = 168,103.80 : x
  2. Step 2: Convert to fraction form
    666,739.80/1,000,109.70 = 168,103.80/x
  3. Step 3: Cross multiply
    666,739.80x = 1,000,109.70 × 168,103.80
  4. Step 4: Simplify right side
    666,739.80x = 168,122,240,986.86
  5. Step 5: Solve for x
    x = 168,122,240,986.86/666,739.80
  6. Step 6: Final answer
    x = 252,155.70

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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.