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Finding the Fourth Proportional to 149,312.45, 205,978.60 and 95,554.37

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Solution

The fourth proportional to 149,312.45, 205,978.60 and 95,554.37 is: 131,818.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,312.45 : 205,978.60 = 95,554.37 : x
  2. Step 2: Convert to fraction form
    149,312.45/205,978.60 = 95,554.37/x
  3. Step 3: Cross multiply
    149,312.45x = 205,978.60 × 95,554.37
  4. Step 4: Simplify right side
    149,312.45x = 19,682,155,356.48
  5. Step 5: Solve for x
    x = 19,682,155,356.48/149,312.45
  6. Step 6: Final answer
    x = 131,818.58

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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.