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Finding the Fourth Proportional to 138,009.66, 207,014.22 and 43,247.10

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Solution

The fourth proportional to 138,009.66, 207,014.22 and 43,247.10 is: 64,870.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,009.66 : 207,014.22 = 43,247.10 : x
  2. Step 2: Convert to fraction form
    138,009.66/207,014.22 = 43,247.10/x
  3. Step 3: Cross multiply
    138,009.66x = 207,014.22 × 43,247.10
  4. Step 4: Simplify right side
    138,009.66x = 8,952,765,450.07
  5. Step 5: Solve for x
    x = 8,952,765,450.07/138,009.66
  6. Step 6: Final answer
    x = 64,870.57

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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.