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Finding the Fourth Proportional to 171,038.60, 256,557.90 and 115,051.40

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Solution

The fourth proportional to 171,038.60, 256,557.90 and 115,051.40 is: 172,577.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,038.60 : 256,557.90 = 115,051.40 : x
  2. Step 2: Convert to fraction form
    171,038.60/256,557.90 = 115,051.40/x
  3. Step 3: Cross multiply
    171,038.60x = 256,557.90 × 115,051.40
  4. Step 4: Simplify right side
    171,038.60x = 29,517,345,576.06
  5. Step 5: Solve for x
    x = 29,517,345,576.06/171,038.60
  6. Step 6: Final answer
    x = 172,577.10

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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.