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Finding the Fourth Proportional to 144,139.68, 198,910.80 and 79,607.52

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Solution

The fourth proportional to 144,139.68, 198,910.80 and 79,607.52 is: 109,857.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,139.68 : 198,910.80 = 79,607.52 : x
  2. Step 2: Convert to fraction form
    144,139.68/198,910.80 = 79,607.52/x
  3. Step 3: Cross multiply
    144,139.68x = 198,910.80 × 79,607.52
  4. Step 4: Simplify right side
    144,139.68x = 15,834,795,489.22
  5. Step 5: Solve for x
    x = 15,834,795,489.22/144,139.68
  6. Step 6: Final answer
    x = 109,857.30

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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.