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Finding the Fourth Proportional to 108,648, 149,942.88 and 63,944.64

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Solution

The fourth proportional to 108,648, 149,942.88 and 63,944.64 is: 88,248.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,648 : 149,942.88 = 63,944.64 : x
  2. Step 2: Convert to fraction form
    108,648/149,942.88 = 63,944.64/x
  3. Step 3: Cross multiply
    108,648x = 149,942.88 × 63,944.64
  4. Step 4: Simplify right side
    108,648x = 9,588,043,482.16
  5. Step 5: Solve for x
    x = 9,588,043,482.16/108,648
  6. Step 6: Final answer
    x = 88,248.69

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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.