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Finding the Fourth Proportional to 123,327.14, 170,173.14 and 74,903.87

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Solution

The fourth proportional to 123,327.14, 170,173.14 and 74,903.87 is: 103,356.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,327.14 : 170,173.14 = 74,903.87 : x
  2. Step 2: Convert to fraction form
    123,327.14/170,173.14 = 74,903.87/x
  3. Step 3: Cross multiply
    123,327.14x = 170,173.14 × 74,903.87
  4. Step 4: Simplify right side
    123,327.14x = 12,746,625,905.19
  5. Step 5: Solve for x
    x = 12,746,625,905.19/123,327.14
  6. Step 6: Final answer
    x = 103,356.22

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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.