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Finding the Fourth Proportional to 139,818.80, 192,950.88 and 76,156.04

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Solution

The fourth proportional to 139,818.80, 192,950.88 and 76,156.04 is: 105,095.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,818.80 : 192,950.88 = 76,156.04 : x
  2. Step 2: Convert to fraction form
    139,818.80/192,950.88 = 76,156.04/x
  3. Step 3: Cross multiply
    139,818.80x = 192,950.88 × 76,156.04
  4. Step 4: Simplify right side
    139,818.80x = 14,694,374,935.32
  5. Step 5: Solve for x
    x = 14,694,374,935.32/139,818.80
  6. Step 6: Final answer
    x = 105,095.85

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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.