Home / 144,217.90-198,739.53-103,855.40

Finding the Fourth Proportional to 144,217.90, 198,739.53 and 103,855.40

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Solution

The fourth proportional to 144,217.90, 198,739.53 and 103,855.40 is: 143,117.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,217.90 : 198,739.53 = 103,855.40 : x
  2. Step 2: Convert to fraction form
    144,217.90/198,739.53 = 103,855.40/x
  3. Step 3: Cross multiply
    144,217.90x = 198,739.53 × 103,855.40
  4. Step 4: Simplify right side
    144,217.90x = 20,640,173,383.96
  5. Step 5: Solve for x
    x = 20,640,173,383.96/144,217.90
  6. Step 6: Final answer
    x = 143,117.97

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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.