Home / 103,098.96-142,562.88-81,841.36

Finding the Fourth Proportional to 103,098.96, 142,562.88 and 81,841.36

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Solution

The fourth proportional to 103,098.96, 142,562.88 and 81,841.36 is: 113,168.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,098.96 : 142,562.88 = 81,841.36 : x
  2. Step 2: Convert to fraction form
    103,098.96/142,562.88 = 81,841.36/x
  3. Step 3: Cross multiply
    103,098.96x = 142,562.88 × 81,841.36
  4. Step 4: Simplify right side
    103,098.96x = 11,667,539,984.72
  5. Step 5: Solve for x
    x = 11,667,539,984.72/103,098.96
  6. Step 6: Final answer
    x = 113,168.36

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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.