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Finding the Fourth Proportional to 101,349.68, 139,912.44 and 63,644.72

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Solution

The fourth proportional to 101,349.68, 139,912.44 and 63,644.72 is: 87,861.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,349.68 : 139,912.44 = 63,644.72 : x
  2. Step 2: Convert to fraction form
    101,349.68/139,912.44 = 63,644.72/x
  3. Step 3: Cross multiply
    101,349.68x = 139,912.44 × 63,644.72
  4. Step 4: Simplify right side
    101,349.68x = 8,904,688,068.32
  5. Step 5: Solve for x
    x = 8,904,688,068.32/101,349.68
  6. Step 6: Final answer
    x = 87,861.04

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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.