Home / 135,788.40-187,479.36-103,900.32

Finding the Fourth Proportional to 135,788.40, 187,479.36 and 103,900.32

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Solution

The fourth proportional to 135,788.40, 187,479.36 and 103,900.32 is: 143,452.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,788.40 : 187,479.36 = 103,900.32 : x
  2. Step 2: Convert to fraction form
    135,788.40/187,479.36 = 103,900.32/x
  3. Step 3: Cross multiply
    135,788.40x = 187,479.36 × 103,900.32
  4. Step 4: Simplify right side
    135,788.40x = 19,479,165,497.40
  5. Step 5: Solve for x
    x = 19,479,165,497.40/135,788.40
  6. Step 6: Final answer
    x = 143,452.35

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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.