Home / 136,919.09-188,941.59-76,477.70

Finding the Fourth Proportional to 136,919.09, 188,941.59 and 76,477.70

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Solution

The fourth proportional to 136,919.09, 188,941.59 and 76,477.70 is: 105,535.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,919.09 : 188,941.59 = 76,477.70 : x
  2. Step 2: Convert to fraction form
    136,919.09/188,941.59 = 76,477.70/x
  3. Step 3: Cross multiply
    136,919.09x = 188,941.59 × 76,477.70
  4. Step 4: Simplify right side
    136,919.09x = 14,449,818,237.54
  5. Step 5: Solve for x
    x = 14,449,818,237.54/136,919.09
  6. Step 6: Final answer
    x = 105,535.45

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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.