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Finding the Fourth Proportional to 104,318.88, 143,980.47 and 68,507.97

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Solution

The fourth proportional to 104,318.88, 143,980.47 and 68,507.97 is: 94,554.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,318.88 : 143,980.47 = 68,507.97 : x
  2. Step 2: Convert to fraction form
    104,318.88/143,980.47 = 68,507.97/x
  3. Step 3: Cross multiply
    104,318.88x = 143,980.47 × 68,507.97
  4. Step 4: Simplify right side
    104,318.88x = 9,863,809,719.35
  5. Step 5: Solve for x
    x = 9,863,809,719.35/104,318.88
  6. Step 6: Final answer
    x = 94,554.41

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1.5x scale

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.