Home / 218,628.06-301,673.43-123,128.70

Finding the Fourth Proportional to 218,628.06, 301,673.43 and 123,128.70

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Solution

The fourth proportional to 218,628.06, 301,673.43 and 123,128.70 is: 169,898.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,628.06 : 301,673.43 = 123,128.70 : x
  2. Step 2: Convert to fraction form
    218,628.06/301,673.43 = 123,128.70/x
  3. Step 3: Cross multiply
    218,628.06x = 301,673.43 × 123,128.70
  4. Step 4: Simplify right side
    218,628.06x = 37,144,657,260.44
  5. Step 5: Solve for x
    x = 37,144,657,260.44/218,628.06
  6. Step 6: Final answer
    x = 169,898.86

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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.