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Finding the Fourth Proportional to 171,661.56, 257,443.12 and 51,730.12

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Solution

The fourth proportional to 171,661.56, 257,443.12 and 51,730.12 is: 77,580.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,661.56 : 257,443.12 = 51,730.12 : x
  2. Step 2: Convert to fraction form
    171,661.56/257,443.12 = 51,730.12/x
  3. Step 3: Cross multiply
    171,661.56x = 257,443.12 × 51,730.12
  4. Step 4: Simplify right side
    171,661.56x = 13,317,563,490.77
  5. Step 5: Solve for x
    x = 13,317,563,490.77/171,661.56
  6. Step 6: Final answer
    x = 77,580.35

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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.