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Finding the Fourth Proportional to 105,533.56, 145,607.43 and 67,829.68

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Solution

The fourth proportional to 105,533.56, 145,607.43 and 67,829.68 is: 93,586.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,533.56 : 145,607.43 = 67,829.68 : x
  2. Step 2: Convert to fraction form
    105,533.56/145,607.43 = 67,829.68/x
  3. Step 3: Cross multiply
    105,533.56x = 145,607.43 × 67,829.68
  4. Step 4: Simplify right side
    105,533.56x = 9,876,505,382.52
  5. Step 5: Solve for x
    x = 9,876,505,382.52/105,533.56
  6. Step 6: Final answer
    x = 93,586.39

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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.