Home / 148,981.20-205,594.04-81,913.20

Finding the Fourth Proportional to 148,981.20, 205,594.04 and 81,913.20

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Solution

The fourth proportional to 148,981.20, 205,594.04 and 81,913.20 is: 113,040.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,981.20 : 205,594.04 = 81,913.20 : x
  2. Step 2: Convert to fraction form
    148,981.20/205,594.04 = 81,913.20/x
  3. Step 3: Cross multiply
    148,981.20x = 205,594.04 × 81,913.20
  4. Step 4: Simplify right side
    148,981.20x = 16,840,865,717.33
  5. Step 5: Solve for x
    x = 16,840,865,717.33/148,981.20
  6. Step 6: Final answer
    x = 113,040.21

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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.