Home / 147,798.38-203,961.78-80,730.38

Finding the Fourth Proportional to 147,798.38, 203,961.78 and 80,730.38

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Solution

The fourth proportional to 147,798.38, 203,961.78 and 80,730.38 is: 111,407.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,798.38 : 203,961.78 = 80,730.38 : x
  2. Step 2: Convert to fraction form
    147,798.38/203,961.78 = 80,730.38/x
  3. Step 3: Cross multiply
    147,798.38x = 203,961.78 × 80,730.38
  4. Step 4: Simplify right side
    147,798.38x = 16,465,910,985.07
  5. Step 5: Solve for x
    x = 16,465,910,985.07/147,798.38
  6. Step 6: Final answer
    x = 111,407.93

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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.