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Finding the Fourth Proportional to 136,953.50, 189,004.62 and 76,524.32

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Solution

The fourth proportional to 136,953.50, 189,004.62 and 76,524.32 is: 105,608.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,953.50 : 189,004.62 = 76,524.32 : x
  2. Step 2: Convert to fraction form
    136,953.50/189,004.62 = 76,524.32/x
  3. Step 3: Cross multiply
    136,953.50x = 189,004.62 × 76,524.32
  4. Step 4: Simplify right side
    136,953.50x = 14,463,450,022.36
  5. Step 5: Solve for x
    x = 14,463,450,022.36/136,953.50
  6. Step 6: Final answer
    x = 105,608.47

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1.5x scale

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.