Home / 148,128.80-204,490.61-115,806.39

Finding the Fourth Proportional to 148,128.80, 204,490.61 and 115,806.39

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Solution

The fourth proportional to 148,128.80, 204,490.61 and 115,806.39 is: 159,869.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,128.80 : 204,490.61 = 115,806.39 : x
  2. Step 2: Convert to fraction form
    148,128.80/204,490.61 = 115,806.39/x
  3. Step 3: Cross multiply
    148,128.80x = 204,490.61 × 115,806.39
  4. Step 4: Simplify right side
    148,128.80x = 23,681,319,402.75
  5. Step 5: Solve for x
    x = 23,681,319,402.75/148,128.80
  6. Step 6: Final answer
    x = 159,869.79

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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.