Home / 213,716.64-294,939.72-128,861.04

Finding the Fourth Proportional to 213,716.64, 294,939.72 and 128,861.04

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Solution

The fourth proportional to 213,716.64, 294,939.72 and 128,861.04 is: 177,834.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,716.64 : 294,939.72 = 128,861.04 : x
  2. Step 2: Convert to fraction form
    213,716.64/294,939.72 = 128,861.04/x
  3. Step 3: Cross multiply
    213,716.64x = 294,939.72 × 128,861.04
  4. Step 4: Simplify right side
    213,716.64x = 38,006,239,056.51
  5. Step 5: Solve for x
    x = 38,006,239,056.51/213,716.64
  6. Step 6: Final answer
    x = 177,834.72

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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.