Home / 159,118.64-219,589.12-87,501.68

Finding the Fourth Proportional to 159,118.64, 219,589.12 and 87,501.68

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Solution

The fourth proportional to 159,118.64, 219,589.12 and 87,501.68 is: 120,755.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,118.64 : 219,589.12 = 87,501.68 : x
  2. Step 2: Convert to fraction form
    159,118.64/219,589.12 = 87,501.68/x
  3. Step 3: Cross multiply
    159,118.64x = 219,589.12 × 87,501.68
  4. Step 4: Simplify right side
    159,118.64x = 19,214,416,909.72
  5. Step 5: Solve for x
    x = 19,214,416,909.72/159,118.64
  6. Step 6: Final answer
    x = 120,755.29

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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.