Home / 144,135.12-216,198-65,249.40

Finding the Fourth Proportional to 144,135.12, 216,198 and 65,249.40

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Solution

The fourth proportional to 144,135.12, 216,198 and 65,249.40 is: 97,871.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,135.12 : 216,198 = 65,249.40 : x
  2. Step 2: Convert to fraction form
    144,135.12/216,198 = 65,249.40/x
  3. Step 3: Cross multiply
    144,135.12x = 216,198 × 65,249.40
  4. Step 4: Simplify right side
    144,135.12x = 14,106,789,781.20
  5. Step 5: Solve for x
    x = 14,106,789,781.20/144,135.12
  6. Step 6: Final answer
    x = 97,871.98

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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.