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Finding the Fourth Proportional to 108,999.32, 150,419.58 and 63,679.88

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Solution

The fourth proportional to 108,999.32, 150,419.58 and 63,679.88 is: 87,878.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,999.32 : 150,419.58 = 63,679.88 : x
  2. Step 2: Convert to fraction form
    108,999.32/150,419.58 = 63,679.88/x
  3. Step 3: Cross multiply
    108,999.32x = 150,419.58 × 63,679.88
  4. Step 4: Simplify right side
    108,999.32x = 9,578,700,804.05
  5. Step 5: Solve for x
    x = 9,578,700,804.05/108,999.32
  6. Step 6: Final answer
    x = 87,878.54

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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.