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Finding the Fourth Proportional to 103,668.63, 143,063.28 and 58,347.33

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Solution

The fourth proportional to 103,668.63, 143,063.28 and 58,347.33 is: 80,519.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,668.63 : 143,063.28 = 58,347.33 : x
  2. Step 2: Convert to fraction form
    103,668.63/143,063.28 = 58,347.33/x
  3. Step 3: Cross multiply
    103,668.63x = 143,063.28 × 58,347.33
  4. Step 4: Simplify right side
    103,668.63x = 8,347,360,409.04
  5. Step 5: Solve for x
    x = 8,347,360,409.04/103,668.63
  6. Step 6: Final answer
    x = 80,519.64

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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.