Home / 445,846.29-668,810.12-126,002.78

Finding the Fourth Proportional to 445,846.29, 668,810.12 and 126,002.78

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Solution

The fourth proportional to 445,846.29, 668,810.12 and 126,002.78 is: 189,015.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,846.29 : 668,810.12 = 126,002.78 : x
  2. Step 2: Convert to fraction form
    445,846.29/668,810.12 = 126,002.78/x
  3. Step 3: Cross multiply
    445,846.29x = 668,810.12 × 126,002.78
  4. Step 4: Simplify right side
    445,846.29x = 84,271,934,827.14
  5. Step 5: Solve for x
    x = 84,271,934,827.14/445,846.29
  6. Step 6: Final answer
    x = 189,015.67

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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.