Home / 117,858.35-162,678.86-77,028.43

Finding the Fourth Proportional to 117,858.35, 162,678.86 and 77,028.43

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Solution

The fourth proportional to 117,858.35, 162,678.86 and 77,028.43 is: 106,321.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,858.35 : 162,678.86 = 77,028.43 : x
  2. Step 2: Convert to fraction form
    117,858.35/162,678.86 = 77,028.43/x
  3. Step 3: Cross multiply
    117,858.35x = 162,678.86 × 77,028.43
  4. Step 4: Simplify right side
    117,858.35x = 12,530,896,307.85
  5. Step 5: Solve for x
    x = 12,530,896,307.85/117,858.35
  6. Step 6: Final answer
    x = 106,321.67

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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.