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Finding the Fourth Proportional to 117,209.80, 161,749.95 and 63,494.69

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Solution

The fourth proportional to 117,209.80, 161,749.95 and 63,494.69 is: 87,622.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,209.80 : 161,749.95 = 63,494.69 : x
  2. Step 2: Convert to fraction form
    117,209.80/161,749.95 = 63,494.69/x
  3. Step 3: Cross multiply
    117,209.80x = 161,749.95 × 63,494.69
  4. Step 4: Simplify right side
    117,209.80x = 10,270,261,885.91
  5. Step 5: Solve for x
    x = 10,270,261,885.91/117,209.80
  6. Step 6: Final answer
    x = 87,622.89

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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.