Home / 113,195.61-169,354.40-81,678.24

Finding the Fourth Proportional to 113,195.61, 169,354.40 and 81,678.24

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Solution

The fourth proportional to 113,195.61, 169,354.40 and 81,678.24 is: 122,200.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,195.61 : 169,354.40 = 81,678.24 : x
  2. Step 2: Convert to fraction form
    113,195.61/169,354.40 = 81,678.24/x
  3. Step 3: Cross multiply
    113,195.61x = 169,354.40 × 81,678.24
  4. Step 4: Simplify right side
    113,195.61x = 13,832,568,919.86
  5. Step 5: Solve for x
    x = 13,832,568,919.86/113,195.61
  6. Step 6: Final answer
    x = 122,200.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.