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Finding the Fourth Proportional to 138,328.64, 207,500.34 and 43,566.23

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Solution

The fourth proportional to 138,328.64, 207,500.34 and 43,566.23 is: 65,351.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,328.64 : 207,500.34 = 43,566.23 : x
  2. Step 2: Convert to fraction form
    138,328.64/207,500.34 = 43,566.23/x
  3. Step 3: Cross multiply
    138,328.64x = 207,500.34 × 43,566.23
  4. Step 4: Simplify right side
    138,328.64x = 9,040,007,537.52
  5. Step 5: Solve for x
    x = 9,040,007,537.52/138,328.64
  6. Step 6: Final answer
    x = 65,351.67

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1.5x scale

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.