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Finding the Fourth Proportional to 96,609.60, 144,914.40 and 80,020.80

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Solution

The fourth proportional to 96,609.60, 144,914.40 and 80,020.80 is: 120,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,609.60 : 144,914.40 = 80,020.80 : x
  2. Step 2: Convert to fraction form
    96,609.60/144,914.40 = 80,020.80/x
  3. Step 3: Cross multiply
    96,609.60x = 144,914.40 × 80,020.80
  4. Step 4: Simplify right side
    96,609.60x = 11,596,166,219.52
  5. Step 5: Solve for x
    x = 11,596,166,219.52/96,609.60
  6. Step 6: Final answer
    x = 120,031.20

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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.