Home / 100,103.03-138,128.55-59,808.26

Finding the Fourth Proportional to 100,103.03, 138,128.55 and 59,808.26

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Solution

The fourth proportional to 100,103.03, 138,128.55 and 59,808.26 is: 82,527.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,103.03 : 138,128.55 = 59,808.26 : x
  2. Step 2: Convert to fraction form
    100,103.03/138,128.55 = 59,808.26/x
  3. Step 3: Cross multiply
    100,103.03x = 138,128.55 × 59,808.26
  4. Step 4: Simplify right side
    100,103.03x = 8,261,228,231.82
  5. Step 5: Solve for x
    x = 8,261,228,231.82/100,103.03
  6. Step 6: Final answer
    x = 82,527.25

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1.5x scale

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.