Home / 132,628.61-183,021.89-72,198

Finding the Fourth Proportional to 132,628.61, 183,021.89 and 72,198

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Solution

The fourth proportional to 132,628.61, 183,021.89 and 72,198 is: 99,630.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,628.61 : 183,021.89 = 72,198 : x
  2. Step 2: Convert to fraction form
    132,628.61/183,021.89 = 72,198/x
  3. Step 3: Cross multiply
    132,628.61x = 183,021.89 × 72,198
  4. Step 4: Simplify right side
    132,628.61x = 13,213,814,053.23
  5. Step 5: Solve for x
    x = 13,213,814,053.23/132,628.61
  6. Step 6: Final answer
    x = 99,630.19

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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.