Home / 148,994.20-205,612.82-81,011.84

Finding the Fourth Proportional to 148,994.20, 205,612.82 and 81,011.84

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Solution

The fourth proportional to 148,994.20, 205,612.82 and 81,011.84 is: 111,796.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,994.20 : 205,612.82 = 81,011.84 : x
  2. Step 2: Convert to fraction form
    148,994.20/205,612.82 = 81,011.84/x
  3. Step 3: Cross multiply
    148,994.20x = 205,612.82 × 81,011.84
  4. Step 4: Simplify right side
    148,994.20x = 16,657,072,875.79
  5. Step 5: Solve for x
    x = 16,657,072,875.79/148,994.20
  6. Step 6: Final answer
    x = 111,796.79

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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.