Home / 136,617.97-188,532.42-76,188.67

Finding the Fourth Proportional to 136,617.97, 188,532.42 and 76,188.67

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Solution

The fourth proportional to 136,617.97, 188,532.42 and 76,188.67 is: 105,140.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,617.97 : 188,532.42 = 76,188.67 : x
  2. Step 2: Convert to fraction form
    136,617.97/188,532.42 = 76,188.67/x
  3. Step 3: Cross multiply
    136,617.97x = 188,532.42 × 76,188.67
  4. Step 4: Simplify right side
    136,617.97x = 14,364,034,803.01
  5. Step 5: Solve for x
    x = 14,364,034,803.01/136,617.97
  6. Step 6: Final answer
    x = 105,140.16

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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.