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Finding the Fourth Proportional to 140,477.45, 210,716.36 and 57,371.45

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Solution

The fourth proportional to 140,477.45, 210,716.36 and 57,371.45 is: 86,057.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,477.45 : 210,716.36 = 57,371.45 : x
  2. Step 2: Convert to fraction form
    140,477.45/210,716.36 = 57,371.45/x
  3. Step 3: Cross multiply
    140,477.45x = 210,716.36 × 57,371.45
  4. Step 4: Simplify right side
    140,477.45x = 12,089,101,771.48
  5. Step 5: Solve for x
    x = 12,089,101,771.48/140,477.45
  6. Step 6: Final answer
    x = 86,057.24

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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.