Home / 136,175.28-187,911.36-75,742.56

Finding the Fourth Proportional to 136,175.28, 187,911.36 and 75,742.56

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Solution

The fourth proportional to 136,175.28, 187,911.36 and 75,742.56 is: 104,518.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,175.28 : 187,911.36 = 75,742.56 : x
  2. Step 2: Convert to fraction form
    136,175.28/187,911.36 = 75,742.56/x
  3. Step 3: Cross multiply
    136,175.28x = 187,911.36 × 75,742.56
  4. Step 4: Simplify right side
    136,175.28x = 14,232,887,459.48
  5. Step 5: Solve for x
    x = 14,232,887,459.48/136,175.28
  6. Step 6: Final answer
    x = 104,518.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.