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Finding the Fourth Proportional to 171,955.98, 257,895.36 and 72,228.78

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Solution

The fourth proportional to 171,955.98, 257,895.36 and 72,228.78 is: 108,326.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,955.98 : 257,895.36 = 72,228.78 : x
  2. Step 2: Convert to fraction form
    171,955.98/257,895.36 = 72,228.78/x
  3. Step 3: Cross multiply
    171,955.98x = 257,895.36 × 72,228.78
  4. Step 4: Simplify right side
    171,955.98x = 18,627,467,220.46
  5. Step 5: Solve for x
    x = 18,627,467,220.46/171,955.98
  6. Step 6: Final answer
    x = 108,326.95

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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.