Home / 136,509.72-188,384.34-76,084.25

Finding the Fourth Proportional to 136,509.72, 188,384.34 and 76,084.25

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Solution

The fourth proportional to 136,509.72, 188,384.34 and 76,084.25 is: 104,996.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,509.72 : 188,384.34 = 76,084.25 : x
  2. Step 2: Convert to fraction form
    136,509.72/188,384.34 = 76,084.25/x
  3. Step 3: Cross multiply
    136,509.72x = 188,384.34 × 76,084.25
  4. Step 4: Simplify right side
    136,509.72x = 14,333,081,976.92
  5. Step 5: Solve for x
    x = 14,333,081,976.92/136,509.72
  6. Step 6: Final answer
    x = 104,996.79

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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.