Home / 136,698.06-188,657.91-76,289.70

Finding the Fourth Proportional to 136,698.06, 188,657.91 and 76,289.70

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Solution

The fourth proportional to 136,698.06, 188,657.91 and 76,289.70 is: 105,287.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,698.06 : 188,657.91 = 76,289.70 : x
  2. Step 2: Convert to fraction form
    136,698.06/188,657.91 = 76,289.70/x
  3. Step 3: Cross multiply
    136,698.06x = 188,657.91 × 76,289.70
  4. Step 4: Simplify right side
    136,698.06x = 14,392,655,356.53
  5. Step 5: Solve for x
    x = 14,392,655,356.53/136,698.06
  6. Step 6: Final answer
    x = 105,287.93

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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.