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Finding the Fourth Proportional to 183,663.60, 275,203.80 and 121,261.20

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Solution

The fourth proportional to 183,663.60, 275,203.80 and 121,261.20 is: 181,699.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,663.60 : 275,203.80 = 121,261.20 : x
  2. Step 2: Convert to fraction form
    183,663.60/275,203.80 = 121,261.20/x
  3. Step 3: Cross multiply
    183,663.60x = 275,203.80 × 121,261.20
  4. Step 4: Simplify right side
    183,663.60x = 33,371,543,032.56
  5. Step 5: Solve for x
    x = 33,371,543,032.56/183,663.60
  6. Step 6: Final answer
    x = 181,699.28

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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.