Home / 141,935.38-212,662.05-85,657.23

Finding the Fourth Proportional to 141,935.38, 212,662.05 and 85,657.23

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Solution

The fourth proportional to 141,935.38, 212,662.05 and 85,657.23 is: 128,340.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,935.38 : 212,662.05 = 85,657.23 : x
  2. Step 2: Convert to fraction form
    141,935.38/212,662.05 = 85,657.23/x
  3. Step 3: Cross multiply
    141,935.38x = 212,662.05 × 85,657.23
  4. Step 4: Simplify right side
    141,935.38x = 18,216,042,129.12
  5. Step 5: Solve for x
    x = 18,216,042,129.12/141,935.38
  6. Step 6: Final answer
    x = 128,340.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.