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Finding the Fourth Proportional to 136,448.92, 188,313.40 and 76,029.40

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Solution

The fourth proportional to 136,448.92, 188,313.40 and 76,029.40 is: 104,928.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,448.92 : 188,313.40 = 76,029.40 : x
  2. Step 2: Convert to fraction form
    136,448.92/188,313.40 = 76,029.40/x
  3. Step 3: Cross multiply
    136,448.92x = 188,313.40 × 76,029.40
  4. Step 4: Simplify right side
    136,448.92x = 14,317,354,813.96
  5. Step 5: Solve for x
    x = 14,317,354,813.96/136,448.92
  6. Step 6: Final answer
    x = 104,928.31

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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.