Home / 138,538.44-207,807.66-111,011.40

Finding the Fourth Proportional to 138,538.44, 207,807.66 and 111,011.40

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Solution

The fourth proportional to 138,538.44, 207,807.66 and 111,011.40 is: 166,517.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,538.44 : 207,807.66 = 111,011.40 : x
  2. Step 2: Convert to fraction form
    138,538.44/207,807.66 = 111,011.40/x
  3. Step 3: Cross multiply
    138,538.44x = 207,807.66 × 111,011.40
  4. Step 4: Simplify right side
    138,538.44x = 23,069,019,267.32
  5. Step 5: Solve for x
    x = 23,069,019,267.32/138,538.44
  6. Step 6: Final answer
    x = 166,517.10

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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.