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Finding the Fourth Proportional to 132,673.28, 183,073.68 and 78,975.68

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Solution

The fourth proportional to 132,673.28, 183,073.68 and 78,975.68 is: 108,977.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,673.28 : 183,073.68 = 78,975.68 : x
  2. Step 2: Convert to fraction form
    132,673.28/183,073.68 = 78,975.68/x
  3. Step 3: Cross multiply
    132,673.28x = 183,073.68 × 78,975.68
  4. Step 4: Simplify right side
    132,673.28x = 14,458,368,368.10
  5. Step 5: Solve for x
    x = 14,458,368,368.10/132,673.28
  6. Step 6: Final answer
    x = 108,977.24

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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.