Home / 136,615.40-188,528.88-76,186.11

Finding the Fourth Proportional to 136,615.40, 188,528.88 and 76,186.11

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Solution

The fourth proportional to 136,615.40, 188,528.88 and 76,186.11 is: 105,136.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,615.40 : 188,528.88 = 76,186.11 : x
  2. Step 2: Convert to fraction form
    136,615.40/188,528.88 = 76,186.11/x
  3. Step 3: Cross multiply
    136,615.40x = 188,528.88 × 76,186.11
  4. Step 4: Simplify right side
    136,615.40x = 14,363,282,173.11
  5. Step 5: Solve for x
    x = 14,363,282,173.11/136,615.40
  6. Step 6: Final answer
    x = 105,136.63

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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.