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Finding the Fourth Proportional to 104,961.14, 144,866.59 and 72,783.08

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Solution

The fourth proportional to 104,961.14, 144,866.59 and 72,783.08 is: 100,454.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,961.14 : 144,866.59 = 72,783.08 : x
  2. Step 2: Convert to fraction form
    104,961.14/144,866.59 = 72,783.08/x
  3. Step 3: Cross multiply
    104,961.14x = 144,866.59 × 72,783.08
  4. Step 4: Simplify right side
    104,961.14x = 10,543,836,609.30
  5. Step 5: Solve for x
    x = 10,543,836,609.30/104,961.14
  6. Step 6: Final answer
    x = 100,454.67

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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.