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Finding the Fourth Proportional to 171,307.37, 257,113.69 and 81,460.85

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Solution

The fourth proportional to 171,307.37, 257,113.69 and 81,460.85 is: 122,263.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,307.37 : 257,113.69 = 81,460.85 : x
  2. Step 2: Convert to fraction form
    171,307.37/257,113.69 = 81,460.85/x
  3. Step 3: Cross multiply
    171,307.37x = 257,113.69 × 81,460.85
  4. Step 4: Simplify right side
    171,307.37x = 20,944,698,244.82
  5. Step 5: Solve for x
    x = 20,944,698,244.82/171,307.37
  6. Step 6: Final answer
    x = 122,263.85

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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.