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Finding the Fourth Proportional to 202,808.61, 279,873.39 and 112,162.92

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Solution

The fourth proportional to 202,808.61, 279,873.39 and 112,162.92 is: 154,783.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,808.61 : 279,873.39 = 112,162.92 : x
  2. Step 2: Convert to fraction form
    202,808.61/279,873.39 = 112,162.92/x
  3. Step 3: Cross multiply
    202,808.61x = 279,873.39 × 112,162.92
  4. Step 4: Simplify right side
    202,808.61x = 31,391,416,652.70
  5. Step 5: Solve for x
    x = 31,391,416,652.70/202,808.61
  6. Step 6: Final answer
    x = 154,783.45

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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.