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Finding the Fourth Proportional to 123,643.80, 185,480.22 and 39,374.46

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Solution

The fourth proportional to 123,643.80, 185,480.22 and 39,374.46 is: 59,066.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,643.80 : 185,480.22 = 39,374.46 : x
  2. Step 2: Convert to fraction form
    123,643.80/185,480.22 = 39,374.46/x
  3. Step 3: Cross multiply
    123,643.80x = 185,480.22 × 39,374.46
  4. Step 4: Simplify right side
    123,643.80x = 7,303,183,503.18
  5. Step 5: Solve for x
    x = 7,303,183,503.18/123,643.80
  6. Step 6: Final answer
    x = 59,066.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.