Home / 115,820.30-173,730.45-81,994.70

Finding the Fourth Proportional to 115,820.30, 173,730.45 and 81,994.70

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Solution

The fourth proportional to 115,820.30, 173,730.45 and 81,994.70 is: 122,992.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,820.30 : 173,730.45 = 81,994.70 : x
  2. Step 2: Convert to fraction form
    115,820.30/173,730.45 = 81,994.70/x
  3. Step 3: Cross multiply
    115,820.30x = 173,730.45 × 81,994.70
  4. Step 4: Simplify right side
    115,820.30x = 14,244,976,128.62
  5. Step 5: Solve for x
    x = 14,244,976,128.62/115,820.30
  6. Step 6: Final answer
    x = 122,992.05

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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.