Home / 144,090.20-216,135.30-91,731.80

Finding the Fourth Proportional to 144,090.20, 216,135.30 and 91,731.80

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Solution

The fourth proportional to 144,090.20, 216,135.30 and 91,731.80 is: 137,597.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,090.20 : 216,135.30 = 91,731.80 : x
  2. Step 2: Convert to fraction form
    144,090.20/216,135.30 = 91,731.80/x
  3. Step 3: Cross multiply
    144,090.20x = 216,135.30 × 91,731.80
  4. Step 4: Simplify right side
    144,090.20x = 19,826,480,112.54
  5. Step 5: Solve for x
    x = 19,826,480,112.54/144,090.20
  6. Step 6: Final answer
    x = 137,597.70

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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.