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Finding the Fourth Proportional to 115,114.10, 172,671.15 and 68,342.90

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Solution

The fourth proportional to 115,114.10, 172,671.15 and 68,342.90 is: 102,514.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,114.10 : 172,671.15 = 68,342.90 : x
  2. Step 2: Convert to fraction form
    115,114.10/172,671.15 = 68,342.90/x
  3. Step 3: Cross multiply
    115,114.10x = 172,671.15 × 68,342.90
  4. Step 4: Simplify right side
    115,114.10x = 11,800,847,137.34
  5. Step 5: Solve for x
    x = 11,800,847,137.34/115,114.10
  6. Step 6: Final answer
    x = 102,514.35

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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.