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Finding the Fourth Proportional to 126,362.64, 174,380.40 and 72,658.20

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Solution

The fourth proportional to 126,362.64, 174,380.40 and 72,658.20 is: 100,268.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,362.64 : 174,380.40 = 72,658.20 : x
  2. Step 2: Convert to fraction form
    126,362.64/174,380.40 = 72,658.20/x
  3. Step 3: Cross multiply
    126,362.64x = 174,380.40 × 72,658.20
  4. Step 4: Simplify right side
    126,362.64x = 12,670,165,979.28
  5. Step 5: Solve for x
    x = 12,670,165,979.28/126,362.64
  6. Step 6: Final answer
    x = 100,268.29

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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.