Home / 136,431.64-188,250.68-76,000.80

Finding the Fourth Proportional to 136,431.64, 188,250.68 and 76,000.80

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Solution

The fourth proportional to 136,431.64, 188,250.68 and 76,000.80 is: 104,867.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,431.64 : 188,250.68 = 76,000.80 : x
  2. Step 2: Convert to fraction form
    136,431.64/188,250.68 = 76,000.80/x
  3. Step 3: Cross multiply
    136,431.64x = 188,250.68 × 76,000.80
  4. Step 4: Simplify right side
    136,431.64x = 14,307,202,280.54
  5. Step 5: Solve for x
    x = 14,307,202,280.54/136,431.64
  6. Step 6: Final answer
    x = 104,867.19

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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.