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Finding the Fourth Proportional to 136,924.55, 188,955.86 and 76,495.21

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Solution

The fourth proportional to 136,924.55, 188,955.86 and 76,495.21 is: 105,563.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,924.55 : 188,955.86 = 76,495.21 : x
  2. Step 2: Convert to fraction form
    136,924.55/188,955.86 = 76,495.21/x
  3. Step 3: Cross multiply
    136,924.55x = 188,955.86 × 76,495.21
  4. Step 4: Simplify right side
    136,924.55x = 14,454,217,336.56
  5. Step 5: Solve for x
    x = 14,454,217,336.56/136,924.55
  6. Step 6: Final answer
    x = 105,563.38

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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.