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Finding the Fourth Proportional to 171,689.20, 257,533.80 and 168,773.20

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Solution

The fourth proportional to 171,689.20, 257,533.80 and 168,773.20 is: 253,159.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,689.20 : 257,533.80 = 168,773.20 : x
  2. Step 2: Convert to fraction form
    171,689.20/257,533.80 = 168,773.20/x
  3. Step 3: Cross multiply
    171,689.20x = 257,533.80 × 168,773.20
  4. Step 4: Simplify right side
    171,689.20x = 43,464,803,534.16
  5. Step 5: Solve for x
    x = 43,464,803,534.16/171,689.20
  6. Step 6: Final answer
    x = 253,159.80

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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.