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Finding the Fourth Proportional to 153,997.80, 230,823.90 and 87,469.80

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Solution

The fourth proportional to 153,997.80, 230,823.90 and 87,469.80 is: 131,106.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,997.80 : 230,823.90 = 87,469.80 : x
  2. Step 2: Convert to fraction form
    153,997.80/230,823.90 = 87,469.80/x
  3. Step 3: Cross multiply
    153,997.80x = 230,823.90 × 87,469.80
  4. Step 4: Simplify right side
    153,997.80x = 20,190,120,368.22
  5. Step 5: Solve for x
    x = 20,190,120,368.22/153,997.80
  6. Step 6: Final answer
    x = 131,106.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.