Home / 148,930.35-205,527.78-85,288.65

Finding the Fourth Proportional to 148,930.35, 205,527.78 and 85,288.65

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Solution

The fourth proportional to 148,930.35, 205,527.78 and 85,288.65 is: 117,700.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,930.35 : 205,527.78 = 85,288.65 : x
  2. Step 2: Convert to fraction form
    148,930.35/205,527.78 = 85,288.65/x
  3. Step 3: Cross multiply
    148,930.35x = 205,527.78 × 85,288.65
  4. Step 4: Simplify right side
    148,930.35x = 17,529,186,893.70
  5. Step 5: Solve for x
    x = 17,529,186,893.70/148,930.35
  6. Step 6: Final answer
    x = 117,700.57

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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.