Home / 179,020.40-268,178.20-128,981.84

Finding the Fourth Proportional to 179,020.40, 268,178.20 and 128,981.84

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Solution

The fourth proportional to 179,020.40, 268,178.20 and 128,981.84 is: 193,218.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,020.40 : 268,178.20 = 128,981.84 : x
  2. Step 2: Convert to fraction form
    179,020.40/268,178.20 = 128,981.84/x
  3. Step 3: Cross multiply
    179,020.40x = 268,178.20 × 128,981.84
  4. Step 4: Simplify right side
    179,020.40x = 34,590,117,683.89
  5. Step 5: Solve for x
    x = 34,590,117,683.89/179,020.40
  6. Step 6: Final answer
    x = 193,218.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.