Home / 103,517.82-142,925.41-79,276.01

Finding the Fourth Proportional to 103,517.82, 142,925.41 and 79,276.01

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Solution

The fourth proportional to 103,517.82, 142,925.41 and 79,276.01 is: 109,455.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,517.82 : 142,925.41 = 79,276.01 : x
  2. Step 2: Convert to fraction form
    103,517.82/142,925.41 = 79,276.01/x
  3. Step 3: Cross multiply
    103,517.82x = 142,925.41 × 79,276.01
  4. Step 4: Simplify right side
    103,517.82x = 11,330,556,232.41
  5. Step 5: Solve for x
    x = 11,330,556,232.41/103,517.82
  6. Step 6: Final answer
    x = 109,455.13

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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.