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Finding the Fourth Proportional to 110,737.80, 166,106.70 and 76,912.20

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Solution

The fourth proportional to 110,737.80, 166,106.70 and 76,912.20 is: 115,368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,737.80 : 166,106.70 = 76,912.20 : x
  2. Step 2: Convert to fraction form
    110,737.80/166,106.70 = 76,912.20/x
  3. Step 3: Cross multiply
    110,737.80x = 166,106.70 × 76,912.20
  4. Step 4: Simplify right side
    110,737.80x = 12,775,631,731.74
  5. Step 5: Solve for x
    x = 12,775,631,731.74/110,737.80
  6. Step 6: Final answer
    x = 115,368.30

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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.