Home / 112,768.87-155,614.35-61,771.42

Finding the Fourth Proportional to 112,768.87, 155,614.35 and 61,771.42

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Solution

The fourth proportional to 112,768.87, 155,614.35 and 61,771.42 is: 85,240.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,768.87 : 155,614.35 = 61,771.42 : x
  2. Step 2: Convert to fraction form
    112,768.87/155,614.35 = 61,771.42/x
  3. Step 3: Cross multiply
    112,768.87x = 155,614.35 × 61,771.42
  4. Step 4: Simplify right side
    112,768.87x = 9,612,519,371.88
  5. Step 5: Solve for x
    x = 9,612,519,371.88/112,768.87
  6. Step 6: Final answer
    x = 85,240.89

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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.