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Finding the Fourth Proportional to 123,070.80, 184,606.20 and 103,387.80

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Solution

The fourth proportional to 123,070.80, 184,606.20 and 103,387.80 is: 155,081.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,070.80 : 184,606.20 = 103,387.80 : x
  2. Step 2: Convert to fraction form
    123,070.80/184,606.20 = 103,387.80/x
  3. Step 3: Cross multiply
    123,070.80x = 184,606.20 × 103,387.80
  4. Step 4: Simplify right side
    123,070.80x = 19,086,028,884.36
  5. Step 5: Solve for x
    x = 19,086,028,884.36/123,070.80
  6. Step 6: Final answer
    x = 155,081.70

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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.