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Finding the Fourth Proportional to 202,775.72, 279,832.30 and 112,137.78

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Solution

The fourth proportional to 202,775.72, 279,832.30 and 112,137.78 is: 154,751.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,775.72 : 279,832.30 = 112,137.78 : x
  2. Step 2: Convert to fraction form
    202,775.72/279,832.30 = 112,137.78/x
  3. Step 3: Cross multiply
    202,775.72x = 279,832.30 × 112,137.78
  4. Step 4: Simplify right side
    202,775.72x = 31,379,772,894.29
  5. Step 5: Solve for x
    x = 31,379,772,894.29/202,775.72
  6. Step 6: Final answer
    x = 154,751.14

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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.