Home / 102,980.88-142,113.96-57,660.84

Finding the Fourth Proportional to 102,980.88, 142,113.96 and 57,660.84

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Solution

The fourth proportional to 102,980.88, 142,113.96 and 57,660.84 is: 79,572.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,980.88 : 142,113.96 = 57,660.84 : x
  2. Step 2: Convert to fraction form
    102,980.88/142,113.96 = 57,660.84/x
  3. Step 3: Cross multiply
    102,980.88x = 142,113.96 × 57,660.84
  4. Step 4: Simplify right side
    102,980.88x = 8,194,410,309.33
  5. Step 5: Solve for x
    x = 8,194,410,309.33/102,980.88
  6. Step 6: Final answer
    x = 79,572.15

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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.