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Finding the Fourth Proportional to 138,347.99, 207,529.47 and 43,585.64

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Solution

The fourth proportional to 138,347.99, 207,529.47 and 43,585.64 is: 65,380.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,347.99 : 207,529.47 = 43,585.64 : x
  2. Step 2: Convert to fraction form
    138,347.99/207,529.47 = 43,585.64/x
  3. Step 3: Cross multiply
    138,347.99x = 207,529.47 × 43,585.64
  4. Step 4: Simplify right side
    138,347.99x = 9,045,303,731.16
  5. Step 5: Solve for x
    x = 9,045,303,731.16/138,347.99
  6. Step 6: Final answer
    x = 65,380.81

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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.