Home / 102,958.56-142,085.95-57,636.36

Finding the Fourth Proportional to 102,958.56, 142,085.95 and 57,636.36

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Solution

The fourth proportional to 102,958.56, 142,085.95 and 57,636.36 is: 79,539.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,958.56 : 142,085.95 = 57,636.36 : x
  2. Step 2: Convert to fraction form
    102,958.56/142,085.95 = 57,636.36/x
  3. Step 3: Cross multiply
    102,958.56x = 142,085.95 × 57,636.36
  4. Step 4: Simplify right side
    102,958.56x = 8,189,316,821.05
  5. Step 5: Solve for x
    x = 8,189,316,821.05/102,958.56
  6. Step 6: Final answer
    x = 79,539.93

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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.