Home / 239,172.88-330,051.72-137,215.28

Finding the Fourth Proportional to 239,172.88, 330,051.72 and 137,215.28

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Solution

The fourth proportional to 239,172.88, 330,051.72 and 137,215.28 is: 189,353.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,172.88 : 330,051.72 = 137,215.28 : x
  2. Step 2: Convert to fraction form
    239,172.88/330,051.72 = 137,215.28/x
  3. Step 3: Cross multiply
    239,172.88x = 330,051.72 × 137,215.28
  4. Step 4: Simplify right side
    239,172.88x = 45,288,139,174.28
  5. Step 5: Solve for x
    x = 45,288,139,174.28/239,172.88
  6. Step 6: Final answer
    x = 189,353.15

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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.