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Finding the Fourth Proportional to 111,970.94, 154,551.65 and 73,758.38

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Solution

The fourth proportional to 111,970.94, 154,551.65 and 73,758.38 is: 101,807.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,970.94 : 154,551.65 = 73,758.38 : x
  2. Step 2: Convert to fraction form
    111,970.94/154,551.65 = 73,758.38/x
  3. Step 3: Cross multiply
    111,970.94x = 154,551.65 × 73,758.38
  4. Step 4: Simplify right side
    111,970.94x = 11,399,478,188.78
  5. Step 5: Solve for x
    x = 11,399,478,188.78/111,970.94
  6. Step 6: Final answer
    x = 101,807.48

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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.