Home / 136,528.29-188,409.93-76,102.77

Finding the Fourth Proportional to 136,528.29, 188,409.93 and 76,102.77

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Solution

The fourth proportional to 136,528.29, 188,409.93 and 76,102.77 is: 105,022.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,528.29 : 188,409.93 = 76,102.77 : x
  2. Step 2: Convert to fraction form
    136,528.29/188,409.93 = 76,102.77/x
  3. Step 3: Cross multiply
    136,528.29x = 188,409.93 × 76,102.77
  4. Step 4: Simplify right side
    136,528.29x = 14,338,517,568.51
  5. Step 5: Solve for x
    x = 14,338,517,568.51/136,528.29
  6. Step 6: Final answer
    x = 105,022.32

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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.