Home / 143,670.21-198,057.76-100,516.01

Finding the Fourth Proportional to 143,670.21, 198,057.76 and 100,516.01

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Solution

The fourth proportional to 143,670.21, 198,057.76 and 100,516.01 is: 138,567.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,670.21 : 198,057.76 = 100,516.01 : x
  2. Step 2: Convert to fraction form
    143,670.21/198,057.76 = 100,516.01/x
  3. Step 3: Cross multiply
    143,670.21x = 198,057.76 × 100,516.01
  4. Step 4: Simplify right side
    143,670.21x = 19,907,974,920.09
  5. Step 5: Solve for x
    x = 19,907,974,920.09/143,670.21
  6. Step 6: Final answer
    x = 138,567.17

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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.