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Finding the Fourth Proportional to 104,063.52, 143,606.88 and 81,425.64

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Solution

The fourth proportional to 104,063.52, 143,606.88 and 81,425.64 is: 112,366.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,063.52 : 143,606.88 = 81,425.64 : x
  2. Step 2: Convert to fraction form
    104,063.52/143,606.88 = 81,425.64/x
  3. Step 3: Cross multiply
    104,063.52x = 143,606.88 × 81,425.64
  4. Step 4: Simplify right side
    104,063.52x = 11,693,282,112.40
  5. Step 5: Solve for x
    x = 11,693,282,112.40/104,063.52
  6. Step 6: Final answer
    x = 112,366.77

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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.