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Finding the Fourth Proportional to 126,391.45, 174,499.08 and 80,477

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Solution

The fourth proportional to 126,391.45, 174,499.08 and 80,477 is: 111,108.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,391.45 : 174,499.08 = 80,477 : x
  2. Step 2: Convert to fraction form
    126,391.45/174,499.08 = 80,477/x
  3. Step 3: Cross multiply
    126,391.45x = 174,499.08 × 80,477
  4. Step 4: Simplify right side
    126,391.45x = 14,043,162,461.16
  5. Step 5: Solve for x
    x = 14,043,162,461.16/126,391.45
  6. Step 6: Final answer
    x = 111,108.49

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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.