Home / 136,611.30-188,522.76-76,182.70

Finding the Fourth Proportional to 136,611.30, 188,522.76 and 76,182.70

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Solution

The fourth proportional to 136,611.30, 188,522.76 and 76,182.70 is: 105,131.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,611.30 : 188,522.76 = 76,182.70 : x
  2. Step 2: Convert to fraction form
    136,611.30/188,522.76 = 76,182.70/x
  3. Step 3: Cross multiply
    136,611.30x = 188,522.76 × 76,182.70
  4. Step 4: Simplify right side
    136,611.30x = 14,362,172,868.25
  5. Step 5: Solve for x
    x = 14,362,172,868.25/136,611.30
  6. Step 6: Final answer
    x = 105,131.66

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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.