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Finding the Fourth Proportional to 171,367.04, 257,009.16 and 66,118.88

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Solution

The fourth proportional to 171,367.04, 257,009.16 and 66,118.88 is: 99,162.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,367.04 : 257,009.16 = 66,118.88 : x
  2. Step 2: Convert to fraction form
    171,367.04/257,009.16 = 66,118.88/x
  3. Step 3: Cross multiply
    171,367.04x = 257,009.16 × 66,118.88
  4. Step 4: Simplify right side
    171,367.04x = 16,993,157,808.94
  5. Step 5: Solve for x
    x = 16,993,157,808.94/171,367.04
  6. Step 6: Final answer
    x = 99,162.35

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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.