Home / 107,823.80-161,735.70-79,830.20

Finding the Fourth Proportional to 107,823.80, 161,735.70 and 79,830.20

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Solution

The fourth proportional to 107,823.80, 161,735.70 and 79,830.20 is: 119,745.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,823.80 : 161,735.70 = 79,830.20 : x
  2. Step 2: Convert to fraction form
    107,823.80/161,735.70 = 79,830.20/x
  3. Step 3: Cross multiply
    107,823.80x = 161,735.70 × 79,830.20
  4. Step 4: Simplify right side
    107,823.80x = 12,911,393,278.14
  5. Step 5: Solve for x
    x = 12,911,393,278.14/107,823.80
  6. Step 6: Final answer
    x = 119,745.30

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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.