Home / 102,940.90-142,051.85-57,611.23

Finding the Fourth Proportional to 102,940.90, 142,051.85 and 57,611.23

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Solution

The fourth proportional to 102,940.90, 142,051.85 and 57,611.23 is: 79,499.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,940.90 : 142,051.85 = 57,611.23 : x
  2. Step 2: Convert to fraction form
    102,940.90/142,051.85 = 57,611.23/x
  3. Step 3: Cross multiply
    102,940.90x = 142,051.85 × 57,611.23
  4. Step 4: Simplify right side
    102,940.90x = 8,183,781,514.22
  5. Step 5: Solve for x
    x = 8,183,781,514.22/102,940.90
  6. Step 6: Final answer
    x = 79,499.81

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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.