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Finding the Fourth Proportional to 100,633.64, 138,887.55 and 64,927.52

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Solution

The fourth proportional to 100,633.64, 138,887.55 and 64,927.52 is: 89,608.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,633.64 : 138,887.55 = 64,927.52 : x
  2. Step 2: Convert to fraction form
    100,633.64/138,887.55 = 64,927.52/x
  3. Step 3: Cross multiply
    100,633.64x = 138,887.55 × 64,927.52
  4. Step 4: Simplify right side
    100,633.64x = 9,017,623,485.94
  5. Step 5: Solve for x
    x = 9,017,623,485.94/100,633.64
  6. Step 6: Final answer
    x = 89,608.44

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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.