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Finding the Fourth Proportional to 172,690.76, 259,035.18 and 54,370.76

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Solution

The fourth proportional to 172,690.76, 259,035.18 and 54,370.76 is: 81,555.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,690.76 : 259,035.18 = 54,370.76 : x
  2. Step 2: Convert to fraction form
    172,690.76/259,035.18 = 54,370.76/x
  3. Step 3: Cross multiply
    172,690.76x = 259,035.18 × 54,370.76
  4. Step 4: Simplify right side
    172,690.76x = 14,083,939,603.34
  5. Step 5: Solve for x
    x = 14,083,939,603.34/172,690.76
  6. Step 6: Final answer
    x = 81,555.84

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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.