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Finding the Fourth Proportional to 104,296.30, 143,875.91 and 65,991.30

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Solution

The fourth proportional to 104,296.30, 143,875.91 and 65,991.30 is: 91,034.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,296.30 : 143,875.91 = 65,991.30 : x
  2. Step 2: Convert to fraction form
    104,296.30/143,875.91 = 65,991.30/x
  3. Step 3: Cross multiply
    104,296.30x = 143,875.91 × 65,991.30
  4. Step 4: Simplify right side
    104,296.30x = 9,494,558,339.58
  5. Step 5: Solve for x
    x = 9,494,558,339.58/104,296.30
  6. Step 6: Final answer
    x = 91,034.47

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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.