Home / 136,891.80-188,908.67-76,463.30

Finding the Fourth Proportional to 136,891.80, 188,908.67 and 76,463.30

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Solution

The fourth proportional to 136,891.80, 188,908.67 and 76,463.30 is: 105,518.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,891.80 : 188,908.67 = 76,463.30 : x
  2. Step 2: Convert to fraction form
    136,891.80/188,908.67 = 76,463.30/x
  3. Step 3: Cross multiply
    136,891.80x = 188,908.67 × 76,463.30
  4. Step 4: Simplify right side
    136,891.80x = 14,444,578,979.95
  5. Step 5: Solve for x
    x = 14,444,578,979.95/136,891.80
  6. Step 6: Final answer
    x = 105,518.22

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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.