Home / 100,536.64-138,700.80-58,087.36

Finding the Fourth Proportional to 100,536.64, 138,700.80 and 58,087.36

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Solution

The fourth proportional to 100,536.64, 138,700.80 and 58,087.36 is: 80,137.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,536.64 : 138,700.80 = 58,087.36 : x
  2. Step 2: Convert to fraction form
    100,536.64/138,700.80 = 58,087.36/x
  3. Step 3: Cross multiply
    100,536.64x = 138,700.80 × 58,087.36
  4. Step 4: Simplify right side
    100,536.64x = 8,056,763,301.89
  5. Step 5: Solve for x
    x = 8,056,763,301.89/100,536.64
  6. Step 6: Final answer
    x = 80,137.58

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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.