Home / 136,919.14-188,946.33-76,490.65

Finding the Fourth Proportional to 136,919.14, 188,946.33 and 76,490.65

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Solution

The fourth proportional to 136,919.14, 188,946.33 and 76,490.65 is: 105,555.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,919.14 : 188,946.33 = 76,490.65 : x
  2. Step 2: Convert to fraction form
    136,919.14/188,946.33 = 76,490.65/x
  3. Step 3: Cross multiply
    136,919.14x = 188,946.33 × 76,490.65
  4. Step 4: Simplify right side
    136,919.14x = 14,452,627,596.81
  5. Step 5: Solve for x
    x = 14,452,627,596.81/136,919.14
  6. Step 6: Final answer
    x = 105,555.93

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1.5x scale

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.