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Finding the Fourth Proportional to 124,139.54, 171,485.36 and 119,530.84

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Solution

The fourth proportional to 124,139.54, 171,485.36 and 119,530.84 is: 165,118.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,139.54 : 171,485.36 = 119,530.84 : x
  2. Step 2: Convert to fraction form
    124,139.54/171,485.36 = 119,530.84/x
  3. Step 3: Cross multiply
    124,139.54x = 171,485.36 × 119,530.84
  4. Step 4: Simplify right side
    124,139.54x = 20,497,789,128.50
  5. Step 5: Solve for x
    x = 20,497,789,128.50/124,139.54
  6. Step 6: Final answer
    x = 165,118.94

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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.