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Finding the Fourth Proportional to 123,056.40, 169,821.36 and 69,338.46

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Solution

The fourth proportional to 123,056.40, 169,821.36 and 69,338.46 is: 95,689.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,056.40 : 169,821.36 = 69,338.46 : x
  2. Step 2: Convert to fraction form
    123,056.40/169,821.36 = 69,338.46/x
  3. Step 3: Cross multiply
    123,056.40x = 169,821.36 × 69,338.46
  4. Step 4: Simplify right side
    123,056.40x = 11,775,151,577.51
  5. Step 5: Solve for x
    x = 11,775,151,577.51/123,056.40
  6. Step 6: Final answer
    x = 95,689.06

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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.