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Finding the Fourth Proportional to 101,783.52, 140,313.60 and 71,476.56

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Solution

The fourth proportional to 101,783.52, 140,313.60 and 71,476.56 is: 98,533.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,783.52 : 140,313.60 = 71,476.56 : x
  2. Step 2: Convert to fraction form
    101,783.52/140,313.60 = 71,476.56/x
  3. Step 3: Cross multiply
    101,783.52x = 140,313.60 × 71,476.56
  4. Step 4: Simplify right side
    101,783.52x = 10,029,133,449.22
  5. Step 5: Solve for x
    x = 10,029,133,449.22/101,783.52
  6. Step 6: Final answer
    x = 98,533.96

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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.