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Finding the Fourth Proportional to 117,051.86, 161,379.06 and 74,594.90

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Solution

The fourth proportional to 117,051.86, 161,379.06 and 74,594.90 is: 102,843.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,051.86 : 161,379.06 = 74,594.90 : x
  2. Step 2: Convert to fraction form
    117,051.86/161,379.06 = 74,594.90/x
  3. Step 3: Cross multiply
    117,051.86x = 161,379.06 × 74,594.90
  4. Step 4: Simplify right side
    117,051.86x = 12,038,054,842.79
  5. Step 5: Solve for x
    x = 12,038,054,842.79/117,051.86
  6. Step 6: Final answer
    x = 102,843.77

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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.