Home / 211,867.05-317,646.49-99,489.36

Finding the Fourth Proportional to 211,867.05, 317,646.49 and 99,489.36

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Solution

The fourth proportional to 211,867.05, 317,646.49 and 99,489.36 is: 149,161.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,867.05 : 317,646.49 = 99,489.36 : x
  2. Step 2: Convert to fraction form
    211,867.05/317,646.49 = 99,489.36/x
  3. Step 3: Cross multiply
    211,867.05x = 317,646.49 × 99,489.36
  4. Step 4: Simplify right side
    211,867.05x = 31,602,445,996.35
  5. Step 5: Solve for x
    x = 31,602,445,996.35/211,867.05
  6. Step 6: Final answer
    x = 149,161.68

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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.