Home / 144,762.19-199,780.02-81,120.49

Finding the Fourth Proportional to 144,762.19, 199,780.02 and 81,120.49

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Solution

The fourth proportional to 144,762.19, 199,780.02 and 81,120.49 is: 111,950.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,762.19 : 199,780.02 = 81,120.49 : x
  2. Step 2: Convert to fraction form
    144,762.19/199,780.02 = 81,120.49/x
  3. Step 3: Cross multiply
    144,762.19x = 199,780.02 × 81,120.49
  4. Step 4: Simplify right side
    144,762.19x = 16,206,252,615.16
  5. Step 5: Solve for x
    x = 16,206,252,615.16/144,762.19
  6. Step 6: Final answer
    x = 111,950.87

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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.