Home / 144,638.20-216,860.10-65,711.80

Finding the Fourth Proportional to 144,638.20, 216,860.10 and 65,711.80

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Solution

The fourth proportional to 144,638.20, 216,860.10 and 65,711.80 is: 98,523.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,638.20 : 216,860.10 = 65,711.80 : x
  2. Step 2: Convert to fraction form
    144,638.20/216,860.10 = 65,711.80/x
  3. Step 3: Cross multiply
    144,638.20x = 216,860.10 × 65,711.80
  4. Step 4: Simplify right side
    144,638.20x = 14,250,267,519.18
  5. Step 5: Solve for x
    x = 14,250,267,519.18/144,638.20
  6. Step 6: Final answer
    x = 98,523.54

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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.