Home / 143,787.56-198,427.64-83,394

Finding the Fourth Proportional to 143,787.56, 198,427.64 and 83,394

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Solution

The fourth proportional to 143,787.56, 198,427.64 and 83,394 is: 115,084.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,787.56 : 198,427.64 = 83,394 : x
  2. Step 2: Convert to fraction form
    143,787.56/198,427.64 = 83,394/x
  3. Step 3: Cross multiply
    143,787.56x = 198,427.64 × 83,394
  4. Step 4: Simplify right side
    143,787.56x = 16,547,674,610.16
  5. Step 5: Solve for x
    x = 16,547,674,610.16/143,787.56
  6. Step 6: Final answer
    x = 115,084.19

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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.