Home / 136,459.36-188,311.08-76,029.76

Finding the Fourth Proportional to 136,459.36, 188,311.08 and 76,029.76

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Solution

The fourth proportional to 136,459.36, 188,311.08 and 76,029.76 is: 104,919.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,459.36 : 188,311.08 = 76,029.76 : x
  2. Step 2: Convert to fraction form
    136,459.36/188,311.08 = 76,029.76/x
  3. Step 3: Cross multiply
    136,459.36x = 188,311.08 × 76,029.76
  4. Step 4: Simplify right side
    136,459.36x = 14,317,246,217.74
  5. Step 5: Solve for x
    x = 14,317,246,217.74/136,459.36
  6. Step 6: Final answer
    x = 104,919.49

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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.