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Finding the Fourth Proportional to 171,761.17, 257,379.02 and 91,810.51

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Solution

The fourth proportional to 171,761.17, 257,379.02 and 91,810.51 is: 137,575.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,761.17 : 257,379.02 = 91,810.51 : x
  2. Step 2: Convert to fraction form
    171,761.17/257,379.02 = 91,810.51/x
  3. Step 3: Cross multiply
    171,761.17x = 257,379.02 × 91,810.51
  4. Step 4: Simplify right side
    171,761.17x = 23,630,097,987.00
  5. Step 5: Solve for x
    x = 23,630,097,987.00/171,761.17
  6. Step 6: Final answer
    x = 137,575.32

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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.