Home / 103,787.55-143,170.83-69,391.53

Finding the Fourth Proportional to 103,787.55, 143,170.83 and 69,391.53

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Solution

The fourth proportional to 103,787.55, 143,170.83 and 69,391.53 is: 95,722.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,787.55 : 143,170.83 = 69,391.53 : x
  2. Step 2: Convert to fraction form
    103,787.55/143,170.83 = 69,391.53/x
  3. Step 3: Cross multiply
    103,787.55x = 143,170.83 × 69,391.53
  4. Step 4: Simplify right side
    103,787.55x = 9,934,842,945.07
  5. Step 5: Solve for x
    x = 9,934,842,945.07/103,787.55
  6. Step 6: Final answer
    x = 95,722.88

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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.