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Finding the Fourth Proportional to 171,304.74, 257,109.74 and 81,458.22

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Solution

The fourth proportional to 171,304.74, 257,109.74 and 81,458.22 is: 122,259.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,304.74 : 257,109.74 = 81,458.22 : x
  2. Step 2: Convert to fraction form
    171,304.74/257,109.74 = 81,458.22/x
  3. Step 3: Cross multiply
    171,304.74x = 257,109.74 × 81,458.22
  4. Step 4: Simplify right side
    171,304.74x = 20,943,701,357.77
  5. Step 5: Solve for x
    x = 20,943,701,357.77/171,304.74
  6. Step 6: Final answer
    x = 122,259.91

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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.