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Finding the Fourth Proportional to 139,888.84, 209,832.18 and 40,051.48

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Solution

The fourth proportional to 139,888.84, 209,832.18 and 40,051.48 is: 60,076.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,888.84 : 209,832.18 = 40,051.48 : x
  2. Step 2: Convert to fraction form
    139,888.84/209,832.18 = 40,051.48/x
  3. Step 3: Cross multiply
    139,888.84x = 209,832.18 × 40,051.48
  4. Step 4: Simplify right side
    139,888.84x = 8,404,089,360.63
  5. Step 5: Solve for x
    x = 8,404,089,360.63/139,888.84
  6. Step 6: Final answer
    x = 60,076.91

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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.