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Finding the Fourth Proportional to 202,871.90, 279,960.81 and 112,220.75

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Solution

The fourth proportional to 202,871.90, 279,960.81 and 112,220.75 is: 154,863.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,871.90 : 279,960.81 = 112,220.75 : x
  2. Step 2: Convert to fraction form
    202,871.90/279,960.81 = 112,220.75/x
  3. Step 3: Cross multiply
    202,871.90x = 279,960.81 × 112,220.75
  4. Step 4: Simplify right side
    202,871.90x = 31,417,410,669.00
  5. Step 5: Solve for x
    x = 31,417,410,669.00/202,871.90
  6. Step 6: Final answer
    x = 154,863.30

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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.