Home / 136,431.72-188,250.75-76,000.86

Finding the Fourth Proportional to 136,431.72, 188,250.75 and 76,000.86

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Solution

The fourth proportional to 136,431.72, 188,250.75 and 76,000.86 is: 104,867.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,431.72 : 188,250.75 = 76,000.86 : x
  2. Step 2: Convert to fraction form
    136,431.72/188,250.75 = 76,000.86/x
  3. Step 3: Cross multiply
    136,431.72x = 188,250.75 × 76,000.86
  4. Step 4: Simplify right side
    136,431.72x = 14,307,218,895.65
  5. Step 5: Solve for x
    x = 14,307,218,895.65/136,431.72
  6. Step 6: Final answer
    x = 104,867.25

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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.