Home / 133,504.20-199,964.70-103,688.10

Finding the Fourth Proportional to 133,504.20, 199,964.70 and 103,688.10

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Solution

The fourth proportional to 133,504.20, 199,964.70 and 103,688.10 is: 155,305.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,504.20 : 199,964.70 = 103,688.10 : x
  2. Step 2: Convert to fraction form
    133,504.20/199,964.70 = 103,688.10/x
  3. Step 3: Cross multiply
    133,504.20x = 199,964.70 × 103,688.10
  4. Step 4: Simplify right side
    133,504.20x = 20,733,959,810.07
  5. Step 5: Solve for x
    x = 20,733,959,810.07/133,504.20
  6. Step 6: Final answer
    x = 155,305.67

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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.