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Finding the Fourth Proportional to 129,783, 179,100.58 and 70,167

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Solution

The fourth proportional to 129,783, 179,100.58 and 70,167 is: 96,830.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,783 : 179,100.58 = 70,167 : x
  2. Step 2: Convert to fraction form
    129,783/179,100.58 = 70,167/x
  3. Step 3: Cross multiply
    129,783x = 179,100.58 × 70,167
  4. Step 4: Simplify right side
    129,783x = 12,566,950,396.86
  5. Step 5: Solve for x
    x = 12,566,950,396.86/129,783
  6. Step 6: Final answer
    x = 96,830.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.