Home / 280,134.50-420,205.41-93,146

Finding the Fourth Proportional to 280,134.50, 420,205.41 and 93,146

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Solution

The fourth proportional to 280,134.50, 420,205.41 and 93,146 is: 139,720.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,134.50 : 420,205.41 = 93,146 : x
  2. Step 2: Convert to fraction form
    280,134.50/420,205.41 = 93,146/x
  3. Step 3: Cross multiply
    280,134.50x = 420,205.41 × 93,146
  4. Step 4: Simplify right side
    280,134.50x = 39,140,453,119.86
  5. Step 5: Solve for x
    x = 39,140,453,119.86/280,134.50
  6. Step 6: Final answer
    x = 139,720.22

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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.