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Finding the Fourth Proportional to 136,923.42, 188,952.18 and 76,494.90

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Solution

The fourth proportional to 136,923.42, 188,952.18 and 76,494.90 is: 105,561.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,923.42 : 188,952.18 = 76,494.90 : x
  2. Step 2: Convert to fraction form
    136,923.42/188,952.18 = 76,494.90/x
  3. Step 3: Cross multiply
    136,923.42x = 188,952.18 × 76,494.90
  4. Step 4: Simplify right side
    136,923.42x = 14,453,878,113.88
  5. Step 5: Solve for x
    x = 14,453,878,113.88/136,923.42
  6. Step 6: Final answer
    x = 105,561.77

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