Home / 102,958.40-142,085.57-57,636.14

Finding the Fourth Proportional to 102,958.40, 142,085.57 and 57,636.14

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Solution

The fourth proportional to 102,958.40, 142,085.57 and 57,636.14 is: 79,539.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,958.40 : 142,085.57 = 57,636.14 : x
  2. Step 2: Convert to fraction form
    102,958.40/142,085.57 = 57,636.14/x
  3. Step 3: Cross multiply
    102,958.40x = 142,085.57 × 57,636.14
  4. Step 4: Simplify right side
    102,958.40x = 8,189,262,805.89
  5. Step 5: Solve for x
    x = 8,189,262,805.89/102,958.40
  6. Step 6: Final answer
    x = 79,539.53

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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.