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Finding the Fourth Proportional to 100,638.54, 139,022.91 and 95,324.13

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Solution

The fourth proportional to 100,638.54, 139,022.91 and 95,324.13 is: 131,681.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,638.54 : 139,022.91 = 95,324.13 : x
  2. Step 2: Convert to fraction form
    100,638.54/139,022.91 = 95,324.13/x
  3. Step 3: Cross multiply
    100,638.54x = 139,022.91 × 95,324.13
  4. Step 4: Simplify right side
    100,638.54x = 13,252,237,945.82
  5. Step 5: Solve for x
    x = 13,252,237,945.82/100,638.54
  6. Step 6: Final answer
    x = 131,681.54

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1.5x scale

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.