Home / 108,143.41-148,153.97-104,100.29

Finding the Fourth Proportional to 108,143.41, 148,153.97 and 104,100.29

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Solution

The fourth proportional to 108,143.41, 148,153.97 and 104,100.29 is: 142,614.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,143.41 : 148,153.97 = 104,100.29 : x
  2. Step 2: Convert to fraction form
    108,143.41/148,153.97 = 104,100.29/x
  3. Step 3: Cross multiply
    108,143.41x = 148,153.97 × 104,100.29
  4. Step 4: Simplify right side
    108,143.41x = 15,422,871,241.65
  5. Step 5: Solve for x
    x = 15,422,871,241.65/108,143.41
  6. Step 6: Final answer
    x = 142,614.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.