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Finding the Fourth Proportional to 113,846.80, 170,770.20 and 72,477.20

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Solution

The fourth proportional to 113,846.80, 170,770.20 and 72,477.20 is: 108,715.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,846.80 : 170,770.20 = 72,477.20 : x
  2. Step 2: Convert to fraction form
    113,846.80/170,770.20 = 72,477.20/x
  3. Step 3: Cross multiply
    113,846.80x = 170,770.20 × 72,477.20
  4. Step 4: Simplify right side
    113,846.80x = 12,376,945,939.44
  5. Step 5: Solve for x
    x = 12,376,945,939.44/113,846.80
  6. Step 6: Final answer
    x = 108,715.80

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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.