Home / 148,918.31-205,508.63-80,935.46

Finding the Fourth Proportional to 148,918.31, 205,508.63 and 80,935.46

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Solution

The fourth proportional to 148,918.31, 205,508.63 and 80,935.46 is: 111,691.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,918.31 : 205,508.63 = 80,935.46 : x
  2. Step 2: Convert to fraction form
    148,918.31/205,508.63 = 80,935.46/x
  3. Step 3: Cross multiply
    148,918.31x = 205,508.63 × 80,935.46
  4. Step 4: Simplify right side
    148,918.31x = 16,632,935,503.02
  5. Step 5: Solve for x
    x = 16,632,935,503.02/148,918.31
  6. Step 6: Final answer
    x = 111,691.68

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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.