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Finding the Fourth Proportional to 138,806.00, 191,548.73 and 77,552.65

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Solution

The fourth proportional to 138,806.00, 191,548.73 and 77,552.65 is: 107,020.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,806.00 : 191,548.73 = 77,552.65 : x
  2. Step 2: Convert to fraction form
    138,806.00/191,548.73 = 77,552.65/x
  3. Step 3: Cross multiply
    138,806.00x = 191,548.73 × 77,552.65
  4. Step 4: Simplify right side
    138,806.00x = 14,855,111,330.64
  5. Step 5: Solve for x
    x = 14,855,111,330.64/138,806.00
  6. Step 6: Final answer
    x = 107,020.68

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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.