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Finding the Fourth Proportional to 103,314.30, 154,971.45 and 73,133.70

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Solution

The fourth proportional to 103,314.30, 154,971.45 and 73,133.70 is: 109,700.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,314.30 : 154,971.45 = 73,133.70 : x
  2. Step 2: Convert to fraction form
    103,314.30/154,971.45 = 73,133.70/x
  3. Step 3: Cross multiply
    103,314.30x = 154,971.45 × 73,133.70
  4. Step 4: Simplify right side
    103,314.30x = 11,333,635,532.87
  5. Step 5: Solve for x
    x = 11,333,635,532.87/103,314.30
  6. Step 6: Final answer
    x = 109,700.55

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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.