Home / 102,940.40-142,051.16-57,610.73

Finding the Fourth Proportional to 102,940.40, 142,051.16 and 57,610.73

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Solution

The fourth proportional to 102,940.40, 142,051.16 and 57,610.73 is: 79,499.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,940.40 : 142,051.16 = 57,610.73 : x
  2. Step 2: Convert to fraction form
    102,940.40/142,051.16 = 57,610.73/x
  3. Step 3: Cross multiply
    102,940.40x = 142,051.16 × 57,610.73
  4. Step 4: Simplify right side
    102,940.40x = 8,183,670,736.89
  5. Step 5: Solve for x
    x = 8,183,670,736.89/102,940.40
  6. Step 6: Final answer
    x = 79,499.12

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1.5x scale

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.