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Finding the Fourth Proportional to 121,101.73, 181,698.72 and 54,526.56

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Solution

The fourth proportional to 121,101.73, 181,698.72 and 54,526.56 is: 81,810.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,101.73 : 181,698.72 = 54,526.56 : x
  2. Step 2: Convert to fraction form
    121,101.73/181,698.72 = 54,526.56/x
  3. Step 3: Cross multiply
    121,101.73x = 181,698.72 × 54,526.56
  4. Step 4: Simplify right side
    121,101.73x = 9,907,406,158.00
  5. Step 5: Solve for x
    x = 9,907,406,158.00/121,101.73
  6. Step 6: Final answer
    x = 81,810.61

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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.