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Finding the Fourth Proportional to 108,659.25, 149,950.32 and 63,368.64

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Solution

The fourth proportional to 108,659.25, 149,950.32 and 63,368.64 is: 87,449.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,659.25 : 149,950.32 = 63,368.64 : x
  2. Step 2: Convert to fraction form
    108,659.25/149,950.32 = 63,368.64/x
  3. Step 3: Cross multiply
    108,659.25x = 149,950.32 × 63,368.64
  4. Step 4: Simplify right side
    108,659.25x = 9,502,147,845.96
  5. Step 5: Solve for x
    x = 9,502,147,845.96/108,659.25
  6. Step 6: Final answer
    x = 87,449.05

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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.