Home / 136,598.40-188,504.98-76,169.78

Finding the Fourth Proportional to 136,598.40, 188,504.98 and 76,169.78

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Solution

The fourth proportional to 136,598.40, 188,504.98 and 76,169.78 is: 105,113.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,598.40 : 188,504.98 = 76,169.78 : x
  2. Step 2: Convert to fraction form
    136,598.40/188,504.98 = 76,169.78/x
  3. Step 3: Cross multiply
    136,598.40x = 188,504.98 × 76,169.78
  4. Step 4: Simplify right side
    136,598.40x = 14,358,382,855.50
  5. Step 5: Solve for x
    x = 14,358,382,855.50/136,598.40
  6. Step 6: Final answer
    x = 105,113.84

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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.