Home / 103,992.14-143,194.59-85,775.15

Finding the Fourth Proportional to 103,992.14, 143,194.59 and 85,775.15

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Solution

The fourth proportional to 103,992.14, 143,194.59 and 85,775.15 is: 118,110.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,992.14 : 143,194.59 = 85,775.15 : x
  2. Step 2: Convert to fraction form
    103,992.14/143,194.59 = 85,775.15/x
  3. Step 3: Cross multiply
    103,992.14x = 143,194.59 × 85,775.15
  4. Step 4: Simplify right side
    103,992.14x = 12,282,536,720.47
  5. Step 5: Solve for x
    x = 12,282,536,720.47/103,992.14
  6. Step 6: Final answer
    x = 118,110.25

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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.