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Finding the Fourth Proportional to 168,810.72, 232,739.64 and 105,034.56

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Solution

The fourth proportional to 168,810.72, 232,739.64 and 105,034.56 is: 144,811.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,810.72 : 232,739.64 = 105,034.56 : x
  2. Step 2: Convert to fraction form
    168,810.72/232,739.64 = 105,034.56/x
  3. Step 3: Cross multiply
    168,810.72x = 232,739.64 × 105,034.56
  4. Step 4: Simplify right side
    168,810.72x = 24,445,705,681.96
  5. Step 5: Solve for x
    x = 24,445,705,681.96/168,810.72
  6. Step 6: Final answer
    x = 144,811.33

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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.