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Finding the Fourth Proportional to 102,999.66, 154,374.72 and 43,710.78

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Solution

The fourth proportional to 102,999.66, 154,374.72 and 43,710.78 is: 65,513.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,999.66 : 154,374.72 = 43,710.78 : x
  2. Step 2: Convert to fraction form
    102,999.66/154,374.72 = 43,710.78/x
  3. Step 3: Cross multiply
    102,999.66x = 154,374.72 × 43,710.78
  4. Step 4: Simplify right side
    102,999.66x = 6,747,839,423.48
  5. Step 5: Solve for x
    x = 6,747,839,423.48/102,999.66
  6. Step 6: Final answer
    x = 65,513.22

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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.