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Finding the Fourth Proportional to 136,998.28, 188,332.49 and 117,807.40

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Solution

The fourth proportional to 136,998.28, 188,332.49 and 117,807.40 is: 161,950.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,998.28 : 188,332.49 = 117,807.40 : x
  2. Step 2: Convert to fraction form
    136,998.28/188,332.49 = 117,807.40/x
  3. Step 3: Cross multiply
    136,998.28x = 188,332.49 × 117,807.40
  4. Step 4: Simplify right side
    136,998.28x = 22,186,960,982.43
  5. Step 5: Solve for x
    x = 22,186,960,982.43/136,998.28
  6. Step 6: Final answer
    x = 161,950.65

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.