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Finding the Fourth Proportional to 147,057.77, 202,939.72 and 79,989.77

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Solution

The fourth proportional to 147,057.77, 202,939.72 and 79,989.77 is: 110,385.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,057.77 : 202,939.72 = 79,989.77 : x
  2. Step 2: Convert to fraction form
    147,057.77/202,939.72 = 79,989.77/x
  3. Step 3: Cross multiply
    147,057.77x = 202,939.72 × 79,989.77
  4. Step 4: Simplify right side
    147,057.77x = 16,233,101,526.66
  5. Step 5: Solve for x
    x = 16,233,101,526.66/147,057.77
  6. Step 6: Final answer
    x = 110,385.88

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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.