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Finding the Fourth Proportional to 115,590.40, 173,644.80 and 80,598.40

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Solution

The fourth proportional to 115,590.40, 173,644.80 and 80,598.40 is: 121,078.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,590.40 : 173,644.80 = 80,598.40 : x
  2. Step 2: Convert to fraction form
    115,590.40/173,644.80 = 80,598.40/x
  3. Step 3: Cross multiply
    115,590.40x = 173,644.80 × 80,598.40
  4. Step 4: Simplify right side
    115,590.40x = 13,995,493,048.32
  5. Step 5: Solve for x
    x = 13,995,493,048.32/115,590.40
  6. Step 6: Final answer
    x = 121,078.33

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.