Home / 132,943.48-198,636.71-128,292.46

Finding the Fourth Proportional to 132,943.48, 198,636.71 and 128,292.46

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Solution

The fourth proportional to 132,943.48, 198,636.71 and 128,292.46 is: 191,687.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,943.48 : 198,636.71 = 128,292.46 : x
  2. Step 2: Convert to fraction form
    132,943.48/198,636.71 = 128,292.46/x
  3. Step 3: Cross multiply
    132,943.48x = 198,636.71 × 128,292.46
  4. Step 4: Simplify right side
    132,943.48x = 25,483,591,034.15
  5. Step 5: Solve for x
    x = 25,483,591,034.15/132,943.48
  6. Step 6: Final answer
    x = 191,687.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.