Home / 120,446.76-180,731.82-57,338.28

Finding the Fourth Proportional to 120,446.76, 180,731.82 and 57,338.28

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Solution

The fourth proportional to 120,446.76, 180,731.82 and 57,338.28 is: 86,036.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,446.76 : 180,731.82 = 57,338.28 : x
  2. Step 2: Convert to fraction form
    120,446.76/180,731.82 = 57,338.28/x
  3. Step 3: Cross multiply
    120,446.76x = 180,731.82 × 57,338.28
  4. Step 4: Simplify right side
    120,446.76x = 10,362,851,700.07
  5. Step 5: Solve for x
    x = 10,362,851,700.07/120,446.76
  6. Step 6: Final answer
    x = 86,036.78

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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.