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Finding the Fourth Proportional to 108,545, 149,796.70 and 63,215.68

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Solution

The fourth proportional to 108,545, 149,796.70 and 63,215.68 is: 87,240.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,545 : 149,796.70 = 63,215.68 : x
  2. Step 2: Convert to fraction form
    108,545/149,796.70 = 63,215.68/x
  3. Step 3: Cross multiply
    108,545x = 149,796.70 × 63,215.68
  4. Step 4: Simplify right side
    108,545x = 9,469,500,252.26
  5. Step 5: Solve for x
    x = 9,469,500,252.26/108,545
  6. Step 6: Final answer
    x = 87,240.32

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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.