Home / 143,486.12-198,064.14-123,261.80

Finding the Fourth Proportional to 143,486.12, 198,064.14 and 123,261.80

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Solution

The fourth proportional to 143,486.12, 198,064.14 and 123,261.80 is: 170,147.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,486.12 : 198,064.14 = 123,261.80 : x
  2. Step 2: Convert to fraction form
    143,486.12/198,064.14 = 123,261.80/x
  3. Step 3: Cross multiply
    143,486.12x = 198,064.14 × 123,261.80
  4. Step 4: Simplify right side
    143,486.12x = 24,413,742,411.85
  5. Step 5: Solve for x
    x = 24,413,742,411.85/143,486.12
  6. Step 6: Final answer
    x = 170,147.07

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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.