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Finding the Fourth Proportional to 101,798.40, 140,334.30 and 71,491.44

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Solution

The fourth proportional to 101,798.40, 140,334.30 and 71,491.44 is: 98,554.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,798.40 : 140,334.30 = 71,491.44 : x
  2. Step 2: Convert to fraction form
    101,798.40/140,334.30 = 71,491.44/x
  3. Step 3: Cross multiply
    101,798.40x = 140,334.30 × 71,491.44
  4. Step 4: Simplify right side
    101,798.40x = 10,032,701,188.39
  5. Step 5: Solve for x
    x = 10,032,701,188.39/101,798.40
  6. Step 6: Final answer
    x = 98,554.61

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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.