Home / 113,519.76-156,493.62-79,422.60

Finding the Fourth Proportional to 113,519.76, 156,493.62 and 79,422.60

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Solution

The fourth proportional to 113,519.76, 156,493.62 and 79,422.60 is: 109,488.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,519.76 : 156,493.62 = 79,422.60 : x
  2. Step 2: Convert to fraction form
    113,519.76/156,493.62 = 79,422.60/x
  3. Step 3: Cross multiply
    113,519.76x = 156,493.62 × 79,422.60
  4. Step 4: Simplify right side
    113,519.76x = 12,429,130,183.81
  5. Step 5: Solve for x
    x = 12,429,130,183.81/113,519.76
  6. Step 6: Final answer
    x = 109,488.69

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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.