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Finding the Fourth Proportional to 163,911.80, 245,964.90 and 107,912.45

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Solution

The fourth proportional to 163,911.80, 245,964.90 and 107,912.45 is: 161,932.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,911.80 : 245,964.90 = 107,912.45 : x
  2. Step 2: Convert to fraction form
    163,911.80/245,964.90 = 107,912.45/x
  3. Step 3: Cross multiply
    163,911.80x = 245,964.90 × 107,912.45
  4. Step 4: Simplify right side
    163,911.80x = 26,542,674,973.01
  5. Step 5: Solve for x
    x = 26,542,674,973.01/163,911.80
  6. Step 6: Final answer
    x = 161,932.67

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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.