Home / 145,933.75-201,388.85-78,865.75

Finding the Fourth Proportional to 145,933.75, 201,388.85 and 78,865.75

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Solution

The fourth proportional to 145,933.75, 201,388.85 and 78,865.75 is: 108,834.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,933.75 : 201,388.85 = 78,865.75 : x
  2. Step 2: Convert to fraction form
    145,933.75/201,388.85 = 78,865.75/x
  3. Step 3: Cross multiply
    145,933.75x = 201,388.85 × 78,865.75
  4. Step 4: Simplify right side
    145,933.75x = 15,882,682,696.89
  5. Step 5: Solve for x
    x = 15,882,682,696.89/145,933.75
  6. Step 6: Final answer
    x = 108,834.88

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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.