Home / 136,610.30-188,521.40-76,181.70

Finding the Fourth Proportional to 136,610.30, 188,521.40 and 76,181.70

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Solution

The fourth proportional to 136,610.30, 188,521.40 and 76,181.70 is: 105,130.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,610.30 : 188,521.40 = 76,181.70 : x
  2. Step 2: Convert to fraction form
    136,610.30/188,521.40 = 76,181.70/x
  3. Step 3: Cross multiply
    136,610.30x = 188,521.40 × 76,181.70
  4. Step 4: Simplify right side
    136,610.30x = 14,361,880,738.38
  5. Step 5: Solve for x
    x = 14,361,880,738.38/136,610.30
  6. Step 6: Final answer
    x = 105,130.29

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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.