Home / 145,128.42-200,259.09-80,588.88

Finding the Fourth Proportional to 145,128.42, 200,259.09 and 80,588.88

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Solution

The fourth proportional to 145,128.42, 200,259.09 and 80,588.88 is: 111,202.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,128.42 : 200,259.09 = 80,588.88 : x
  2. Step 2: Convert to fraction form
    145,128.42/200,259.09 = 80,588.88/x
  3. Step 3: Cross multiply
    145,128.42x = 200,259.09 × 80,588.88
  4. Step 4: Simplify right side
    145,128.42x = 16,138,656,186.08
  5. Step 5: Solve for x
    x = 16,138,656,186.08/145,128.42
  6. Step 6: Final answer
    x = 111,202.59

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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.