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Finding the Fourth Proportional to 104,256.63, 143,889.52 and 66,019.67

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Solution

The fourth proportional to 104,256.63, 143,889.52 and 66,019.67 is: 91,116.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,256.63 : 143,889.52 = 66,019.67 : x
  2. Step 2: Convert to fraction form
    104,256.63/143,889.52 = 66,019.67/x
  3. Step 3: Cross multiply
    104,256.63x = 143,889.52 × 66,019.67
  4. Step 4: Simplify right side
    104,256.63x = 9,499,538,405.73
  5. Step 5: Solve for x
    x = 9,499,538,405.73/104,256.63
  6. Step 6: Final answer
    x = 91,116.88

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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.