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Finding the Fourth Proportional to 158,609.53, 218,860.97 and 90,630.91

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Solution

The fourth proportional to 158,609.53, 218,860.97 and 90,630.91 is: 125,059.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,609.53 : 218,860.97 = 90,630.91 : x
  2. Step 2: Convert to fraction form
    158,609.53/218,860.97 = 90,630.91/x
  3. Step 3: Cross multiply
    158,609.53x = 218,860.97 × 90,630.91
  4. Step 4: Simplify right side
    158,609.53x = 19,835,567,780.28
  5. Step 5: Solve for x
    x = 19,835,567,780.28/158,609.53
  6. Step 6: Final answer
    x = 125,059.12

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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.