Home / 211,255.76-316,660.80-78,050.72

Finding the Fourth Proportional to 211,255.76, 316,660.80 and 78,050.72

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Solution

The fourth proportional to 211,255.76, 316,660.80 and 78,050.72 is: 116,993.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,255.76 : 316,660.80 = 78,050.72 : x
  2. Step 2: Convert to fraction form
    211,255.76/316,660.80 = 78,050.72/x
  3. Step 3: Cross multiply
    211,255.76x = 316,660.80 × 78,050.72
  4. Step 4: Simplify right side
    211,255.76x = 24,715,603,435.78
  5. Step 5: Solve for x
    x = 24,715,603,435.78/211,255.76
  6. Step 6: Final answer
    x = 116,993.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.