Home / 108,585.27-149,660.49-72,221.64

Finding the Fourth Proportional to 108,585.27, 149,660.49 and 72,221.64

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Solution

The fourth proportional to 108,585.27, 149,660.49 and 72,221.64 is: 99,541.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,585.27 : 149,660.49 = 72,221.64 : x
  2. Step 2: Convert to fraction form
    108,585.27/149,660.49 = 72,221.64/x
  3. Step 3: Cross multiply
    108,585.27x = 149,660.49 × 72,221.64
  4. Step 4: Simplify right side
    108,585.27x = 10,808,726,031.00
  5. Step 5: Solve for x
    x = 10,808,726,031.00/108,585.27
  6. Step 6: Final answer
    x = 99,541.37

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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.