Home / 136,813.05-188,798.95-76,389.38

Finding the Fourth Proportional to 136,813.05, 188,798.95 and 76,389.38

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Solution

The fourth proportional to 136,813.05, 188,798.95 and 76,389.38 is: 105,415.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,813.05 : 188,798.95 = 76,389.38 : x
  2. Step 2: Convert to fraction form
    136,813.05/188,798.95 = 76,389.38/x
  3. Step 3: Cross multiply
    136,813.05x = 188,798.95 × 76,389.38
  4. Step 4: Simplify right side
    136,813.05x = 14,422,234,594.64
  5. Step 5: Solve for x
    x = 14,422,234,594.64/136,813.05
  6. Step 6: Final answer
    x = 105,415.64

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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.