Home / 136,581.30-188,468.42-76,146.26

Finding the Fourth Proportional to 136,581.30, 188,468.42 and 76,146.26

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Solution

The fourth proportional to 136,581.30, 188,468.42 and 76,146.26 is: 105,074.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,581.30 : 188,468.42 = 76,146.26 : x
  2. Step 2: Convert to fraction form
    136,581.30/188,468.42 = 76,146.26/x
  3. Step 3: Cross multiply
    136,581.30x = 188,468.42 × 76,146.26
  4. Step 4: Simplify right side
    136,581.30x = 14,351,163,988.04
  5. Step 5: Solve for x
    x = 14,351,163,988.04/136,581.30
  6. Step 6: Final answer
    x = 105,074.15

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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.