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Finding the Fourth Proportional to 132,980.56, 183,496.68 and 81,323.62

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Solution

The fourth proportional to 132,980.56, 183,496.68 and 81,323.62 is: 112,216.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,980.56 : 183,496.68 = 81,323.62 : x
  2. Step 2: Convert to fraction form
    132,980.56/183,496.68 = 81,323.62/x
  3. Step 3: Cross multiply
    132,980.56x = 183,496.68 × 81,323.62
  4. Step 4: Simplify right side
    132,980.56x = 14,922,614,275.58
  5. Step 5: Solve for x
    x = 14,922,614,275.58/132,980.56
  6. Step 6: Final answer
    x = 112,216.51

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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.