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Finding the Fourth Proportional to 123,369.60, 185,054.40 and 121,036.80

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Solution

The fourth proportional to 123,369.60, 185,054.40 and 121,036.80 is: 181,555.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,369.60 : 185,054.40 = 121,036.80 : x
  2. Step 2: Convert to fraction form
    123,369.60/185,054.40 = 121,036.80/x
  3. Step 3: Cross multiply
    123,369.60x = 185,054.40 × 121,036.80
  4. Step 4: Simplify right side
    123,369.60x = 22,398,392,401.92
  5. Step 5: Solve for x
    x = 22,398,392,401.92/123,369.60
  6. Step 6: Final answer
    x = 181,555.20

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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.