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Finding the Fourth Proportional to 202,777.72, 279,835.06 and 112,139.78

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Solution

The fourth proportional to 202,777.72, 279,835.06 and 112,139.78 is: 154,753.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,777.72 : 279,835.06 = 112,139.78 : x
  2. Step 2: Convert to fraction form
    202,777.72/279,835.06 = 112,139.78/x
  3. Step 3: Cross multiply
    202,777.72x = 279,835.06 × 112,139.78
  4. Step 4: Simplify right side
    202,777.72x = 31,380,642,064.69
  5. Step 5: Solve for x
    x = 31,380,642,064.69/202,777.72
  6. Step 6: Final answer
    x = 154,753.90

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1.5x scale

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.