Home / 120,019.17-165,615.26-76,922.58

Finding the Fourth Proportional to 120,019.17, 165,615.26 and 76,922.58

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Solution

The fourth proportional to 120,019.17, 165,615.26 and 76,922.58 is: 106,145.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,019.17 : 165,615.26 = 76,922.58 : x
  2. Step 2: Convert to fraction form
    120,019.17/165,615.26 = 76,922.58/x
  3. Step 3: Cross multiply
    120,019.17x = 165,615.26 × 76,922.58
  4. Step 4: Simplify right side
    120,019.17x = 12,739,552,701.96
  5. Step 5: Solve for x
    x = 12,739,552,701.96/120,019.17
  6. Step 6: Final answer
    x = 106,145.98

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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.