Home / 144,134.16-198,908.37-90,421.44

Finding the Fourth Proportional to 144,134.16, 198,908.37 and 90,421.44

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Solution

The fourth proportional to 144,134.16, 198,908.37 and 90,421.44 is: 124,783.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,134.16 : 198,908.37 = 90,421.44 : x
  2. Step 2: Convert to fraction form
    144,134.16/198,908.37 = 90,421.44/x
  3. Step 3: Cross multiply
    144,134.16x = 198,908.37 × 90,421.44
  4. Step 4: Simplify right side
    144,134.16x = 17,985,581,243.45
  5. Step 5: Solve for x
    x = 17,985,581,243.45/144,134.16
  6. Step 6: Final answer
    x = 124,783.61

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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.