Home / 136,685.94-188,631.27-79,320.84

Finding the Fourth Proportional to 136,685.94, 188,631.27 and 79,320.84

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Solution

The fourth proportional to 136,685.94, 188,631.27 and 79,320.84 is: 109,465.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,685.94 : 188,631.27 = 79,320.84 : x
  2. Step 2: Convert to fraction form
    136,685.94/188,631.27 = 79,320.84/x
  3. Step 3: Cross multiply
    136,685.94x = 188,631.27 × 79,320.84
  4. Step 4: Simplify right side
    136,685.94x = 14,962,390,786.67
  5. Step 5: Solve for x
    x = 14,962,390,786.67/136,685.94
  6. Step 6: Final answer
    x = 109,465.47

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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.