Home / 143,670.96-198,058.79-100,516.76

Finding the Fourth Proportional to 143,670.96, 198,058.79 and 100,516.76

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Solution

The fourth proportional to 143,670.96, 198,058.79 and 100,516.76 is: 138,568.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,670.96 : 198,058.79 = 100,516.76 : x
  2. Step 2: Convert to fraction form
    143,670.96/198,058.79 = 100,516.76/x
  3. Step 3: Cross multiply
    143,670.96x = 198,058.79 × 100,516.76
  4. Step 4: Simplify right side
    143,670.96x = 19,908,227,864.04
  5. Step 5: Solve for x
    x = 19,908,227,864.04/143,670.96
  6. Step 6: Final answer
    x = 138,568.21

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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.