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Finding the Fourth Proportional to 113,986.80, 170,980.02 and 30,880.80

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Solution

The fourth proportional to 113,986.80, 170,980.02 and 30,880.80 is: 46,321.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,986.80 : 170,980.02 = 30,880.80 : x
  2. Step 2: Convert to fraction form
    113,986.80/170,980.02 = 30,880.80/x
  3. Step 3: Cross multiply
    113,986.80x = 170,980.02 × 30,880.80
  4. Step 4: Simplify right side
    113,986.80x = 5,279,999,801.62
  5. Step 5: Solve for x
    x = 5,279,999,801.62/113,986.80
  6. Step 6: Final answer
    x = 46,321.15

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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.