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Finding the Fourth Proportional to 187,812.60, 259,179.90 and 102,929.46

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Solution

The fourth proportional to 187,812.60, 259,179.90 and 102,929.46 is: 142,041.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,812.60 : 259,179.90 = 102,929.46 : x
  2. Step 2: Convert to fraction form
    187,812.60/259,179.90 = 102,929.46/x
  3. Step 3: Cross multiply
    187,812.60x = 259,179.90 × 102,929.46
  4. Step 4: Simplify right side
    187,812.60x = 26,677,247,149.85
  5. Step 5: Solve for x
    x = 26,677,247,149.85/187,812.60
  6. Step 6: Final answer
    x = 142,041.84

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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.