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Finding the Fourth Proportional to 171,275.70, 256,913.55 and 82,702.20

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Solution

The fourth proportional to 171,275.70, 256,913.55 and 82,702.20 is: 124,053.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,275.70 : 256,913.55 = 82,702.20 : x
  2. Step 2: Convert to fraction form
    171,275.70/256,913.55 = 82,702.20/x
  3. Step 3: Cross multiply
    171,275.70x = 256,913.55 × 82,702.20
  4. Step 4: Simplify right side
    171,275.70x = 21,247,315,794.81
  5. Step 5: Solve for x
    x = 21,247,315,794.81/171,275.70
  6. Step 6: Final answer
    x = 124,053.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.