Home / 136,943.24-188,962.88-76,506.38

Finding the Fourth Proportional to 136,943.24, 188,962.88 and 76,506.38

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Solution

The fourth proportional to 136,943.24, 188,962.88 and 76,506.38 is: 105,568.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,943.24 : 188,962.88 = 76,506.38 : x
  2. Step 2: Convert to fraction form
    136,943.24/188,962.88 = 76,506.38/x
  3. Step 3: Cross multiply
    136,943.24x = 188,962.88 × 76,506.38
  4. Step 4: Simplify right side
    136,943.24x = 14,456,865,903.17
  5. Step 5: Solve for x
    x = 14,456,865,903.17/136,943.24
  6. Step 6: Final answer
    x = 105,568.31

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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.