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Finding the Fourth Proportional to 119,119.01, 178,640.62 and 39,138.54

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Solution

The fourth proportional to 119,119.01, 178,640.62 and 39,138.54 is: 58,695.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,119.01 : 178,640.62 = 39,138.54 : x
  2. Step 2: Convert to fraction form
    119,119.01/178,640.62 = 39,138.54/x
  3. Step 3: Cross multiply
    119,119.01x = 178,640.62 × 39,138.54
  4. Step 4: Simplify right side
    119,119.01x = 6,991,733,051.49
  5. Step 5: Solve for x
    x = 6,991,733,051.49/119,119.01
  6. Step 6: Final answer
    x = 58,695.36

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1.5x scale

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.