Home / 211,501.87-317,178.89-85,109.32

Finding the Fourth Proportional to 211,501.87, 317,178.89 and 85,109.32

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Solution

The fourth proportional to 211,501.87, 317,178.89 and 85,109.32 is: 127,634.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,501.87 : 317,178.89 = 85,109.32 : x
  2. Step 2: Convert to fraction form
    211,501.87/317,178.89 = 85,109.32/x
  3. Step 3: Cross multiply
    211,501.87x = 317,178.89 × 85,109.32
  4. Step 4: Simplify right side
    211,501.87x = 26,994,878,152.21
  5. Step 5: Solve for x
    x = 26,994,878,152.21/211,501.87
  6. Step 6: Final answer
    x = 127,634.23

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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.