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Finding the Fourth Proportional to 163,394.82, 245,302.13 and 125,978.66

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Solution

The fourth proportional to 163,394.82, 245,302.13 and 125,978.66 is: 189,129.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,394.82 : 245,302.13 = 125,978.66 : x
  2. Step 2: Convert to fraction form
    163,394.82/245,302.13 = 125,978.66/x
  3. Step 3: Cross multiply
    163,394.82x = 245,302.13 × 125,978.66
  4. Step 4: Simplify right side
    163,394.82x = 30,902,831,776.14
  5. Step 5: Solve for x
    x = 30,902,831,776.14/163,394.82
  6. Step 6: Final answer
    x = 189,129.81

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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.