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Finding the Fourth Proportional to 132,409.92, 182,726.89 and 71,980.58

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Solution

The fourth proportional to 132,409.92, 182,726.89 and 71,980.58 is: 99,333.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,409.92 : 182,726.89 = 71,980.58 : x
  2. Step 2: Convert to fraction form
    132,409.92/182,726.89 = 71,980.58/x
  3. Step 3: Cross multiply
    132,409.92x = 182,726.89 × 71,980.58
  4. Step 4: Simplify right side
    132,409.92x = 13,152,787,800.66
  5. Step 5: Solve for x
    x = 13,152,787,800.66/132,409.92
  6. Step 6: Final answer
    x = 99,333.85

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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.