Home / 145,615.75-200,910.45-85,201.23

Finding the Fourth Proportional to 145,615.75, 200,910.45 and 85,201.23

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Solution

The fourth proportional to 145,615.75, 200,910.45 and 85,201.23 is: 117,554.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,615.75 : 200,910.45 = 85,201.23 : x
  2. Step 2: Convert to fraction form
    145,615.75/200,910.45 = 85,201.23/x
  3. Step 3: Cross multiply
    145,615.75x = 200,910.45 × 85,201.23
  4. Step 4: Simplify right side
    145,615.75x = 17,117,817,459.85
  5. Step 5: Solve for x
    x = 17,117,817,459.85/145,615.75
  6. Step 6: Final answer
    x = 117,554.71

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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.