Home / 106,075.07-146,382.49-78,972.34

Finding the Fourth Proportional to 106,075.07, 146,382.49 and 78,972.34

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Solution

The fourth proportional to 106,075.07, 146,382.49 and 78,972.34 is: 108,981.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,075.07 : 146,382.49 = 78,972.34 : x
  2. Step 2: Convert to fraction form
    106,075.07/146,382.49 = 78,972.34/x
  3. Step 3: Cross multiply
    106,075.07x = 146,382.49 × 78,972.34
  4. Step 4: Simplify right side
    106,075.07x = 11,560,167,770.33
  5. Step 5: Solve for x
    x = 11,560,167,770.33/106,075.07
  6. Step 6: Final answer
    x = 108,981.01

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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.