Home / 103,097.60-142,342.92-79,181.36

Finding the Fourth Proportional to 103,097.60, 142,342.92 and 79,181.36

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Solution

The fourth proportional to 103,097.60, 142,342.92 and 79,181.36 is: 109,322.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,097.60 : 142,342.92 = 79,181.36 : x
  2. Step 2: Convert to fraction form
    103,097.60/142,342.92 = 79,181.36/x
  3. Step 3: Cross multiply
    103,097.60x = 142,342.92 × 79,181.36
  4. Step 4: Simplify right side
    103,097.60x = 11,270,905,991.97
  5. Step 5: Solve for x
    x = 11,270,905,991.97/103,097.60
  6. Step 6: Final answer
    x = 109,322.68

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1.5x scale

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.