Home / 138,909.36-208,145.13-107,396.28

Finding the Fourth Proportional to 138,909.36, 208,145.13 and 107,396.28

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Solution

The fourth proportional to 138,909.36, 208,145.13 and 107,396.28 is: 160,925.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,909.36 : 208,145.13 = 107,396.28 : x
  2. Step 2: Convert to fraction form
    138,909.36/208,145.13 = 107,396.28/x
  3. Step 3: Cross multiply
    138,909.36x = 208,145.13 × 107,396.28
  4. Step 4: Simplify right side
    138,909.36x = 22,354,012,662.12
  5. Step 5: Solve for x
    x = 22,354,012,662.12/138,909.36
  6. Step 6: Final answer
    x = 160,925.17

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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.