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Finding the Fourth Proportional to 111,935.70, 167,903.55 and 103,382.10

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Solution

The fourth proportional to 111,935.70, 167,903.55 and 103,382.10 is: 155,073.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,935.70 : 167,903.55 = 103,382.10 : x
  2. Step 2: Convert to fraction form
    111,935.70/167,903.55 = 103,382.10/x
  3. Step 3: Cross multiply
    111,935.70x = 167,903.55 × 103,382.10
  4. Step 4: Simplify right side
    111,935.70x = 17,358,221,596.46
  5. Step 5: Solve for x
    x = 17,358,221,596.46/111,935.70
  6. Step 6: Final answer
    x = 155,073.15

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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.