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Finding the Fourth Proportional to 137,119.20, 205,693.20 and 43,603.20

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Solution

The fourth proportional to 137,119.20, 205,693.20 and 43,603.20 is: 65,409.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,119.20 : 205,693.20 = 43,603.20 : x
  2. Step 2: Convert to fraction form
    137,119.20/205,693.20 = 43,603.20/x
  3. Step 3: Cross multiply
    137,119.20x = 205,693.20 × 43,603.20
  4. Step 4: Simplify right side
    137,119.20x = 8,968,881,738.24
  5. Step 5: Solve for x
    x = 8,968,881,738.24/137,119.20
  6. Step 6: Final answer
    x = 65,409.38

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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.