Home / 202,039.02-278,815.80-111,398.58

Finding the Fourth Proportional to 202,039.02, 278,815.80 and 111,398.58

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Solution

The fourth proportional to 202,039.02, 278,815.80 and 111,398.58 is: 153,731.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,039.02 : 278,815.80 = 111,398.58 : x
  2. Step 2: Convert to fraction form
    202,039.02/278,815.80 = 111,398.58/x
  3. Step 3: Cross multiply
    202,039.02x = 278,815.80 × 111,398.58
  4. Step 4: Simplify right side
    202,039.02x = 31,059,684,201.56
  5. Step 5: Solve for x
    x = 31,059,684,201.56/202,039.02
  6. Step 6: Final answer
    x = 153,731.12

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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.