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Finding the Fourth Proportional to 171,518.54, 257,254.45 and 45,148.20

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Solution

The fourth proportional to 171,518.54, 257,254.45 and 45,148.20 is: 67,716.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,518.54 : 257,254.45 = 45,148.20 : x
  2. Step 2: Convert to fraction form
    171,518.54/257,254.45 = 45,148.20/x
  3. Step 3: Cross multiply
    171,518.54x = 257,254.45 × 45,148.20
  4. Step 4: Simplify right side
    171,518.54x = 11,614,575,359.49
  5. Step 5: Solve for x
    x = 11,614,575,359.49/171,518.54
  6. Step 6: Final answer
    x = 67,716.15

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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.