Home / 211,745.80-317,646.32-111,909.84

Finding the Fourth Proportional to 211,745.80, 317,646.32 and 111,909.84

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Solution

The fourth proportional to 211,745.80, 317,646.32 and 111,909.84 is: 167,879.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,745.80 : 317,646.32 = 111,909.84 : x
  2. Step 2: Convert to fraction form
    211,745.80/317,646.32 = 111,909.84/x
  3. Step 3: Cross multiply
    211,745.80x = 317,646.32 × 111,909.84
  4. Step 4: Simplify right side
    211,745.80x = 35,547,748,847.79
  5. Step 5: Solve for x
    x = 35,547,748,847.79/211,745.80
  6. Step 6: Final answer
    x = 167,879.36

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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.