Home / 136,614.30-188,526.90-76,185.72

Finding the Fourth Proportional to 136,614.30, 188,526.90 and 76,185.72

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Solution

The fourth proportional to 136,614.30, 188,526.90 and 76,185.72 is: 105,135.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,614.30 : 188,526.90 = 76,185.72 : x
  2. Step 2: Convert to fraction form
    136,614.30/188,526.90 = 76,185.72/x
  3. Step 3: Cross multiply
    136,614.30x = 188,526.90 × 76,185.72
  4. Step 4: Simplify right side
    136,614.30x = 14,363,057,615.87
  5. Step 5: Solve for x
    x = 14,363,057,615.87/136,614.30
  6. Step 6: Final answer
    x = 105,135.83

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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.