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Finding the Fourth Proportional to 144,611.86, 199,566.78 and 79,206.40

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Solution

The fourth proportional to 144,611.86, 199,566.78 and 79,206.40 is: 109,306.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,611.86 : 199,566.78 = 79,206.40 : x
  2. Step 2: Convert to fraction form
    144,611.86/199,566.78 = 79,206.40/x
  3. Step 3: Cross multiply
    144,611.86x = 199,566.78 × 79,206.40
  4. Step 4: Simplify right side
    144,611.86x = 15,806,966,203.39
  5. Step 5: Solve for x
    x = 15,806,966,203.39/144,611.86
  6. Step 6: Final answer
    x = 109,306.15

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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.