Home / 120,306.30-165,642.39-105,956.22

Finding the Fourth Proportional to 120,306.30, 165,642.39 and 105,956.22

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Solution

The fourth proportional to 120,306.30, 165,642.39 and 105,956.22 is: 145,884.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,306.30 : 165,642.39 = 105,956.22 : x
  2. Step 2: Convert to fraction form
    120,306.30/165,642.39 = 105,956.22/x
  3. Step 3: Cross multiply
    120,306.30x = 165,642.39 × 105,956.22
  4. Step 4: Simplify right side
    120,306.30x = 17,550,841,516.17
  5. Step 5: Solve for x
    x = 17,550,841,516.17/120,306.30
  6. Step 6: Final answer
    x = 145,884.64

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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.