Home / 136,341.35-188,158.82-81,910.16

Finding the Fourth Proportional to 136,341.35, 188,158.82 and 81,910.16

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Solution

The fourth proportional to 136,341.35, 188,158.82 and 81,910.16 is: 113,040.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,341.35 : 188,158.82 = 81,910.16 : x
  2. Step 2: Convert to fraction form
    136,341.35/188,158.82 = 81,910.16/x
  3. Step 3: Cross multiply
    136,341.35x = 188,158.82 × 81,910.16
  4. Step 4: Simplify right side
    136,341.35x = 15,412,118,642.06
  5. Step 5: Solve for x
    x = 15,412,118,642.06/136,341.35
  6. Step 6: Final answer
    x = 113,040.68

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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.