Home / 103,189.54-142,208.74-80,492.57

Finding the Fourth Proportional to 103,189.54, 142,208.74 and 80,492.57

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Solution

The fourth proportional to 103,189.54, 142,208.74 and 80,492.57 is: 110,929.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,189.54 : 142,208.74 = 80,492.57 : x
  2. Step 2: Convert to fraction form
    103,189.54/142,208.74 = 80,492.57/x
  3. Step 3: Cross multiply
    103,189.54x = 142,208.74 × 80,492.57
  4. Step 4: Simplify right side
    103,189.54x = 11,446,746,556.60
  5. Step 5: Solve for x
    x = 11,446,746,556.60/103,189.54
  6. Step 6: Final answer
    x = 110,929.34

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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.