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Finding the Fourth Proportional to 125,978.33, 173,837.48 and 77,572.50

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Solution

The fourth proportional to 125,978.33, 173,837.48 and 77,572.50 is: 107,042.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,978.33 : 173,837.48 = 77,572.50 : x
  2. Step 2: Convert to fraction form
    125,978.33/173,837.48 = 77,572.50/x
  3. Step 3: Cross multiply
    125,978.33x = 173,837.48 × 77,572.50
  4. Step 4: Simplify right side
    125,978.33x = 13,485,007,917.30
  5. Step 5: Solve for x
    x = 13,485,007,917.30/125,978.33
  6. Step 6: Final answer
    x = 107,042.28

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.