Home / 108,564.72-149,911.08-81,660.36

Finding the Fourth Proportional to 108,564.72, 149,911.08 and 81,660.36

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Solution

The fourth proportional to 108,564.72, 149,911.08 and 81,660.36 is: 112,760.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,564.72 : 149,911.08 = 81,660.36 : x
  2. Step 2: Convert to fraction form
    108,564.72/149,911.08 = 81,660.36/x
  3. Step 3: Cross multiply
    108,564.72x = 149,911.08 × 81,660.36
  4. Step 4: Simplify right side
    108,564.72x = 12,241,792,760.79
  5. Step 5: Solve for x
    x = 12,241,792,760.79/108,564.72
  6. Step 6: Final answer
    x = 112,760.32

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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.