Home / 117,779.97-162,521.60-79,622.55

Finding the Fourth Proportional to 117,779.97, 162,521.60 and 79,622.55

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Solution

The fourth proportional to 117,779.97, 162,521.60 and 79,622.55 is: 109,869.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,779.97 : 162,521.60 = 79,622.55 : x
  2. Step 2: Convert to fraction form
    117,779.97/162,521.60 = 79,622.55/x
  3. Step 3: Cross multiply
    117,779.97x = 162,521.60 × 79,622.55
  4. Step 4: Simplify right side
    117,779.97x = 12,940,384,222.08
  5. Step 5: Solve for x
    x = 12,940,384,222.08/117,779.97
  6. Step 6: Final answer
    x = 109,869.14

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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.