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Finding the Fourth Proportional to 148,886.51, 205,495.79 and 91,575.09

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Solution

The fourth proportional to 148,886.51, 205,495.79 and 91,575.09 is: 126,393.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,886.51 : 205,495.79 = 91,575.09 : x
  2. Step 2: Convert to fraction form
    148,886.51/205,495.79 = 91,575.09/x
  3. Step 3: Cross multiply
    148,886.51x = 205,495.79 × 91,575.09
  4. Step 4: Simplify right side
    148,886.51x = 18,818,295,006.00
  5. Step 5: Solve for x
    x = 18,818,295,006.00/148,886.51
  6. Step 6: Final answer
    x = 126,393.56

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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.