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Finding the Fourth Proportional to 202,235.75, 279,085.34 and 112,811.75

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Solution

The fourth proportional to 202,235.75, 279,085.34 and 112,811.75 is: 155,680.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,235.75 : 279,085.34 = 112,811.75 : x
  2. Step 2: Convert to fraction form
    202,235.75/279,085.34 = 112,811.75/x
  3. Step 3: Cross multiply
    202,235.75x = 279,085.34 × 112,811.75
  4. Step 4: Simplify right side
    202,235.75x = 31,484,105,604.75
  5. Step 5: Solve for x
    x = 31,484,105,604.75/202,235.75
  6. Step 6: Final answer
    x = 155,680.22

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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.