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Finding the Fourth Proportional to 211,668.60, 292,051.07 and 119,790

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Solution

The fourth proportional to 211,668.60, 292,051.07 and 119,790 is: 165,281.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,668.60 : 292,051.07 = 119,790 : x
  2. Step 2: Convert to fraction form
    211,668.60/292,051.07 = 119,790/x
  3. Step 3: Cross multiply
    211,668.60x = 292,051.07 × 119,790
  4. Step 4: Simplify right side
    211,668.60x = 34,984,797,076.35
  5. Step 5: Solve for x
    x = 34,984,797,076.35/211,668.60
  6. Step 6: Final answer
    x = 165,281.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.