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Finding the Fourth Proportional to 96,539.40, 144,809.10 and 80,209.80

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Solution

The fourth proportional to 96,539.40, 144,809.10 and 80,209.80 is: 120,314.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,539.40 : 144,809.10 = 80,209.80 : x
  2. Step 2: Convert to fraction form
    96,539.40/144,809.10 = 80,209.80/x
  3. Step 3: Cross multiply
    96,539.40x = 144,809.10 × 80,209.80
  4. Step 4: Simplify right side
    96,539.40x = 11,615,108,949.18
  5. Step 5: Solve for x
    x = 11,615,108,949.18/96,539.40
  6. Step 6: Final answer
    x = 120,314.70

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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.