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Finding the Fourth Proportional to 114,990.67, 158,687.07 and 64,689.67

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Solution

The fourth proportional to 114,990.67, 158,687.07 and 64,689.67 is: 89,271.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,990.67 : 158,687.07 = 64,689.67 : x
  2. Step 2: Convert to fraction form
    114,990.67/158,687.07 = 64,689.67/x
  3. Step 3: Cross multiply
    114,990.67x = 158,687.07 × 64,689.67
  4. Step 4: Simplify right side
    114,990.67x = 10,265,414,191.57
  5. Step 5: Solve for x
    x = 10,265,414,191.57/114,990.67
  6. Step 6: Final answer
    x = 89,271.71

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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.