Home / 145,396.38-200,646.81-81,734.43

Finding the Fourth Proportional to 145,396.38, 200,646.81 and 81,734.43

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Solution

The fourth proportional to 145,396.38, 200,646.81 and 81,734.43 is: 112,793.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,396.38 : 200,646.81 = 81,734.43 : x
  2. Step 2: Convert to fraction form
    145,396.38/200,646.81 = 81,734.43/x
  3. Step 3: Cross multiply
    145,396.38x = 200,646.81 × 81,734.43
  4. Step 4: Simplify right side
    145,396.38x = 16,399,752,646.67
  5. Step 5: Solve for x
    x = 16,399,752,646.67/145,396.38
  6. Step 6: Final answer
    x = 112,793.40

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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.