Home / 211,826.92-317,779.50-69,680.20

Finding the Fourth Proportional to 211,826.92, 317,779.50 and 69,680.20

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Solution

The fourth proportional to 211,826.92, 317,779.50 and 69,680.20 is: 104,533.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,826.92 : 317,779.50 = 69,680.20 : x
  2. Step 2: Convert to fraction form
    211,826.92/317,779.50 = 69,680.20/x
  3. Step 3: Cross multiply
    211,826.92x = 317,779.50 × 69,680.20
  4. Step 4: Simplify right side
    211,826.92x = 22,142,939,115.90
  5. Step 5: Solve for x
    x = 22,142,939,115.90/211,826.92
  6. Step 6: Final answer
    x = 104,533.17

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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.