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Finding the Fourth Proportional to 123,482.40, 170,405.68 and 66,893.76

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Solution

The fourth proportional to 123,482.40, 170,405.68 and 66,893.76 is: 92,313.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,482.40 : 170,405.68 = 66,893.76 : x
  2. Step 2: Convert to fraction form
    123,482.40/170,405.68 = 66,893.76/x
  3. Step 3: Cross multiply
    123,482.40x = 170,405.68 × 66,893.76
  4. Step 4: Simplify right side
    123,482.40x = 11,399,076,660.56
  5. Step 5: Solve for x
    x = 11,399,076,660.56/123,482.40
  6. Step 6: Final answer
    x = 92,313.37

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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.