Home / 143,344.80-214,721.55-84,000.60

Finding the Fourth Proportional to 143,344.80, 214,721.55 and 84,000.60

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Solution

The fourth proportional to 143,344.80, 214,721.55 and 84,000.60 is: 125,827.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,344.80 : 214,721.55 = 84,000.60 : x
  2. Step 2: Convert to fraction form
    143,344.80/214,721.55 = 84,000.60/x
  3. Step 3: Cross multiply
    143,344.80x = 214,721.55 × 84,000.60
  4. Step 4: Simplify right side
    143,344.80x = 18,036,739,032.93
  5. Step 5: Solve for x
    x = 18,036,739,032.93/143,344.80
  6. Step 6: Final answer
    x = 125,827.65

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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.