Home / 136,615.62-188,530.65-76,190.16

Finding the Fourth Proportional to 136,615.62, 188,530.65 and 76,190.16

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Solution

The fourth proportional to 136,615.62, 188,530.65 and 76,190.16 is: 105,143.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,615.62 : 188,530.65 = 76,190.16 : x
  2. Step 2: Convert to fraction form
    136,615.62/188,530.65 = 76,190.16/x
  3. Step 3: Cross multiply
    136,615.62x = 188,530.65 × 76,190.16
  4. Step 4: Simplify right side
    136,615.62x = 14,364,180,388.40
  5. Step 5: Solve for x
    x = 14,364,180,388.40/136,615.62
  6. Step 6: Final answer
    x = 105,143.03

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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.