Home / 213,727.64-294,954.90-128,872.04

Finding the Fourth Proportional to 213,727.64, 294,954.90 and 128,872.04

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Solution

The fourth proportional to 213,727.64, 294,954.90 and 128,872.04 is: 177,849.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,727.64 : 294,954.90 = 128,872.04 : x
  2. Step 2: Convert to fraction form
    213,727.64/294,954.90 = 128,872.04/x
  3. Step 3: Cross multiply
    213,727.64x = 294,954.90 × 128,872.04
  4. Step 4: Simplify right side
    213,727.64x = 38,011,439,671.00
  5. Step 5: Solve for x
    x = 38,011,439,671.00/213,727.64
  6. Step 6: Final answer
    x = 177,849.90

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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.