Home / 148,979.47-205,595.94-90,839.61

Finding the Fourth Proportional to 148,979.47, 205,595.94 and 90,839.61

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Solution

The fourth proportional to 148,979.47, 205,595.94 and 90,839.61 is: 125,361.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,979.47 : 205,595.94 = 90,839.61 : x
  2. Step 2: Convert to fraction form
    148,979.47/205,595.94 = 90,839.61/x
  3. Step 3: Cross multiply
    148,979.47x = 205,595.94 × 90,839.61
  4. Step 4: Simplify right side
    148,979.47x = 18,676,254,594.79
  5. Step 5: Solve for x
    x = 18,676,254,594.79/148,979.47
  6. Step 6: Final answer
    x = 125,361.27

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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.