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Finding the Fourth Proportional to 202,775.60, 279,832.14 and 112,137.66

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Solution

The fourth proportional to 202,775.60, 279,832.14 and 112,137.66 is: 154,750.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,775.60 : 279,832.14 = 112,137.66 : x
  2. Step 2: Convert to fraction form
    202,775.60/279,832.14 = 112,137.66/x
  3. Step 3: Cross multiply
    202,775.60x = 279,832.14 × 112,137.66
  4. Step 4: Simplify right side
    202,775.60x = 31,379,721,372.39
  5. Step 5: Solve for x
    x = 31,379,721,372.39/202,775.60
  6. Step 6: Final answer
    x = 154,750.98

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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.