Home / 144,865.89-199,914.30-81,203.69

Finding the Fourth Proportional to 144,865.89, 199,914.30 and 81,203.69

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Solution

The fourth proportional to 144,865.89, 199,914.30 and 81,203.69 is: 112,060.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,865.89 : 199,914.30 = 81,203.69 : x
  2. Step 2: Convert to fraction form
    144,865.89/199,914.30 = 81,203.69/x
  3. Step 3: Cross multiply
    144,865.89x = 199,914.30 × 81,203.69
  4. Step 4: Simplify right side
    144,865.89x = 16,233,779,009.68
  5. Step 5: Solve for x
    x = 16,233,779,009.68/144,865.89
  6. Step 6: Final answer
    x = 112,060.74

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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.