Home / 159,021.43-219,450.95-87,403.12

Finding the Fourth Proportional to 159,021.43, 219,450.95 and 87,403.12

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Solution

The fourth proportional to 159,021.43, 219,450.95 and 87,403.12 is: 120,617.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,021.43 : 219,450.95 = 87,403.12 : x
  2. Step 2: Convert to fraction form
    159,021.43/219,450.95 = 87,403.12/x
  3. Step 3: Cross multiply
    159,021.43x = 219,450.95 × 87,403.12
  4. Step 4: Simplify right side
    159,021.43x = 19,180,697,716.96
  5. Step 5: Solve for x
    x = 19,180,697,716.96/159,021.43
  6. Step 6: Final answer
    x = 120,617.06

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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.