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Finding the Fourth Proportional to 108,561.92, 149,817 and 63,238.72

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Solution

The fourth proportional to 108,561.92, 149,817 and 63,238.72 is: 87,270.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,561.92 : 149,817 = 63,238.72 : x
  2. Step 2: Convert to fraction form
    108,561.92/149,817 = 63,238.72/x
  3. Step 3: Cross multiply
    108,561.92x = 149,817 × 63,238.72
  4. Step 4: Simplify right side
    108,561.92x = 9,474,235,314.24
  5. Step 5: Solve for x
    x = 9,474,235,314.24/108,561.92
  6. Step 6: Final answer
    x = 87,270.34

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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.