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Finding the Fourth Proportional to 144,073.99, 198,811.15 and 83,634.90

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Solution

The fourth proportional to 144,073.99, 198,811.15 and 83,634.90 is: 115,409.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,073.99 : 198,811.15 = 83,634.90 : x
  2. Step 2: Convert to fraction form
    144,073.99/198,811.15 = 83,634.90/x
  3. Step 3: Cross multiply
    144,073.99x = 198,811.15 × 83,634.90
  4. Step 4: Simplify right side
    144,073.99x = 16,627,550,649.14
  5. Step 5: Solve for x
    x = 16,627,550,649.14/144,073.99
  6. Step 6: Final answer
    x = 115,409.80

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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.