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Finding the Fourth Proportional to 103,957.51, 156,199.02 and 99,753.75

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Solution

The fourth proportional to 103,957.51, 156,199.02 and 99,753.75 is: 149,882.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,957.51 : 156,199.02 = 99,753.75 : x
  2. Step 2: Convert to fraction form
    103,957.51/156,199.02 = 99,753.75/x
  3. Step 3: Cross multiply
    103,957.51x = 156,199.02 × 99,753.75
  4. Step 4: Simplify right side
    103,957.51x = 15,581,437,991.33
  5. Step 5: Solve for x
    x = 15,581,437,991.33/103,957.51
  6. Step 6: Final answer
    x = 149,882.75

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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.