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Finding the Fourth Proportional to 163,656.78, 225,552.78 and 121,141.50

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Solution

The fourth proportional to 163,656.78, 225,552.78 and 121,141.50 is: 166,957.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,656.78 : 225,552.78 = 121,141.50 : x
  2. Step 2: Convert to fraction form
    163,656.78/225,552.78 = 121,141.50/x
  3. Step 3: Cross multiply
    163,656.78x = 225,552.78 × 121,141.50
  4. Step 4: Simplify right side
    163,656.78x = 27,323,802,098.37
  5. Step 5: Solve for x
    x = 27,323,802,098.37/163,656.78
  6. Step 6: Final answer
    x = 166,957.96

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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.