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Finding the Fourth Proportional to 104,817.39, 144,668.47 and 66,621.43

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Solution

The fourth proportional to 104,817.39, 144,668.47 and 66,621.43 is: 91,950.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,817.39 : 144,668.47 = 66,621.43 : x
  2. Step 2: Convert to fraction form
    104,817.39/144,668.47 = 66,621.43/x
  3. Step 3: Cross multiply
    104,817.39x = 144,668.47 × 66,621.43
  4. Step 4: Simplify right side
    104,817.39x = 9,638,020,347.31
  5. Step 5: Solve for x
    x = 9,638,020,347.31/104,817.39
  6. Step 6: Final answer
    x = 91,950.59

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1.5x scale

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.