Home / 136,690.28-188,632.70-76,260.94

Finding the Fourth Proportional to 136,690.28, 188,632.70 and 76,260.94

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Solution

The fourth proportional to 136,690.28, 188,632.70 and 76,260.94 is: 105,240.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,690.28 : 188,632.70 = 76,260.94 : x
  2. Step 2: Convert to fraction form
    136,690.28/188,632.70 = 76,260.94/x
  3. Step 3: Cross multiply
    136,690.28x = 188,632.70 × 76,260.94
  4. Step 4: Simplify right side
    136,690.28x = 14,385,307,016.74
  5. Step 5: Solve for x
    x = 14,385,307,016.74/136,690.28
  6. Step 6: Final answer
    x = 105,240.16

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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.