Home / 211,769.10-317,653.65-87,110.10

Finding the Fourth Proportional to 211,769.10, 317,653.65 and 87,110.10

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Solution

The fourth proportional to 211,769.10, 317,653.65 and 87,110.10 is: 130,665.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,769.10 : 317,653.65 = 87,110.10 : x
  2. Step 2: Convert to fraction form
    211,769.10/317,653.65 = 87,110.10/x
  3. Step 3: Cross multiply
    211,769.10x = 317,653.65 × 87,110.10
  4. Step 4: Simplify right side
    211,769.10x = 27,670,841,216.87
  5. Step 5: Solve for x
    x = 27,670,841,216.87/211,769.10
  6. Step 6: Final answer
    x = 130,665.15

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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.