Home / 106,074.07-146,381.12-78,971.34

Finding the Fourth Proportional to 106,074.07, 146,381.12 and 78,971.34

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Solution

The fourth proportional to 106,074.07, 146,381.12 and 78,971.34 is: 108,979.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,074.07 : 146,381.12 = 78,971.34 : x
  2. Step 2: Convert to fraction form
    106,074.07/146,381.12 = 78,971.34/x
  3. Step 3: Cross multiply
    106,074.07x = 146,381.12 × 78,971.34
  4. Step 4: Simplify right side
    106,074.07x = 11,559,912,070.34
  5. Step 5: Solve for x
    x = 11,559,912,070.34/106,074.07
  6. Step 6: Final answer
    x = 108,979.62

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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.