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Finding the Fourth Proportional to 128,577.66, 193,162.95 and 123,263.25

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Solution

The fourth proportional to 128,577.66, 193,162.95 and 123,263.25 is: 185,179.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,577.66 : 193,162.95 = 123,263.25 : x
  2. Step 2: Convert to fraction form
    128,577.66/193,162.95 = 123,263.25/x
  3. Step 3: Cross multiply
    128,577.66x = 193,162.95 × 123,263.25
  4. Step 4: Simplify right side
    128,577.66x = 23,809,892,996.59
  5. Step 5: Solve for x
    x = 23,809,892,996.59/128,577.66
  6. Step 6: Final answer
    x = 185,179.08

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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.