Home / 219,725.46-303,223.47-129,085.20

Finding the Fourth Proportional to 219,725.46, 303,223.47 and 129,085.20

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Solution

The fourth proportional to 219,725.46, 303,223.47 and 129,085.20 is: 178,138.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,725.46 : 303,223.47 = 129,085.20 : x
  2. Step 2: Convert to fraction form
    219,725.46/303,223.47 = 129,085.20/x
  3. Step 3: Cross multiply
    219,725.46x = 303,223.47 × 129,085.20
  4. Step 4: Simplify right side
    219,725.46x = 39,141,662,269.64
  5. Step 5: Solve for x
    x = 39,141,662,269.64/219,725.46
  6. Step 6: Final answer
    x = 178,138.95

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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.