Home / 219,725.90-303,224.08-129,085.64

Finding the Fourth Proportional to 219,725.90, 303,224.08 and 129,085.64

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Solution

The fourth proportional to 219,725.90, 303,224.08 and 129,085.64 is: 178,139.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,725.90 : 303,224.08 = 129,085.64 : x
  2. Step 2: Convert to fraction form
    219,725.90/303,224.08 = 129,085.64/x
  3. Step 3: Cross multiply
    219,725.90x = 303,224.08 × 129,085.64
  4. Step 4: Simplify right side
    219,725.90x = 39,141,873,784.78
  5. Step 5: Solve for x
    x = 39,141,873,784.78/219,725.90
  6. Step 6: Final answer
    x = 178,139.55

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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.