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Finding the Fourth Proportional to 172,859.70, 238,555.62 and 101,245.17

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Solution

The fourth proportional to 172,859.70, 238,555.62 and 101,245.17 is: 139,723.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,859.70 : 238,555.62 = 101,245.17 : x
  2. Step 2: Convert to fraction form
    172,859.70/238,555.62 = 101,245.17/x
  3. Step 3: Cross multiply
    172,859.70x = 238,555.62 × 101,245.17
  4. Step 4: Simplify right side
    172,859.70x = 24,152,604,301.36
  5. Step 5: Solve for x
    x = 24,152,604,301.36/172,859.70
  6. Step 6: Final answer
    x = 139,723.74

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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.