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Finding the Fourth Proportional to 132,409.52, 182,725.92 and 71,980.64

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Solution

The fourth proportional to 132,409.52, 182,725.92 and 71,980.64 is: 99,333.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,409.52 : 182,725.92 = 71,980.64 : x
  2. Step 2: Convert to fraction form
    132,409.52/182,725.92 = 71,980.64/x
  3. Step 3: Cross multiply
    132,409.52x = 182,725.92 × 71,980.64
  4. Step 4: Simplify right side
    132,409.52x = 13,152,728,666.19
  5. Step 5: Solve for x
    x = 13,152,728,666.19/132,409.52
  6. Step 6: Final answer
    x = 99,333.71

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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.