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Finding the Fourth Proportional to 132,543.92, 182,703.12 and 90,028.64

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Solution

The fourth proportional to 132,543.92, 182,703.12 and 90,028.64 is: 124,098.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,543.92 : 182,703.12 = 90,028.64 : x
  2. Step 2: Convert to fraction form
    132,543.92/182,703.12 = 90,028.64/x
  3. Step 3: Cross multiply
    132,543.92x = 182,703.12 × 90,028.64
  4. Step 4: Simplify right side
    132,543.92x = 16,448,513,417.36
  5. Step 5: Solve for x
    x = 16,448,513,417.36/132,543.92
  6. Step 6: Final answer
    x = 124,098.59

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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.