Home / 211,402.39-317,029.71-99,135.48

Finding the Fourth Proportional to 211,402.39, 317,029.71 and 99,135.48

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Solution

The fourth proportional to 211,402.39, 317,029.71 and 99,135.48 is: 148,668.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,402.39 : 317,029.71 = 99,135.48 : x
  2. Step 2: Convert to fraction form
    211,402.39/317,029.71 = 99,135.48/x
  3. Step 3: Cross multiply
    211,402.39x = 317,029.71 × 99,135.48
  4. Step 4: Simplify right side
    211,402.39x = 31,428,892,252.44
  5. Step 5: Solve for x
    x = 31,428,892,252.44/211,402.39
  6. Step 6: Final answer
    x = 148,668.58

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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.