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Finding the Fourth Proportional to 115,360.80, 172,911.60 and 59,179.20

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Solution

The fourth proportional to 115,360.80, 172,911.60 and 59,179.20 is: 88,702.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,360.80 : 172,911.60 = 59,179.20 : x
  2. Step 2: Convert to fraction form
    115,360.80/172,911.60 = 59,179.20/x
  3. Step 3: Cross multiply
    115,360.80x = 172,911.60 × 59,179.20
  4. Step 4: Simplify right side
    115,360.80x = 10,232,770,158.72
  5. Step 5: Solve for x
    x = 10,232,770,158.72/115,360.80
  6. Step 6: Final answer
    x = 88,702.32

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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.